9M 12 Interim Group Report. January 1 to September 30, 2012.

3 Contents. To our shareholders 4 Developments in the Group 6 Deutsche Telekom at a glance 6 The T-Share 7 Highlights in the third quarter of 2012 Interim Group management report 8 The economic environment 9 Group structure, management and strategy 9 Development of business in the Group 13 Development of business in the operating segments 25 Risks and opportunities 27 Events after the reporting period 28 Development of revenue and profits Interim consolidated financial statements 29 Consolidated statement of financial position 30 Consolidated income statement 31 Consolidated statement of comprehensive income 32 Consolidated statement of changes in equity 34 Consolidated statement of cash flows 35 Significant events and transactions 42 Responsibility statement 43 Review report Additional information 44 Reconciliation of pro forma figures 47 Glossary 48 Disclaimer 49 Financial calendar

To our shareholders 5 n Net debt decreased by 2.8 percent compared with the end of 2011 to EUR 39.0 billion. n Free cash flow (EUR 5.1 billion) as well as proceeds from the sale of shares in Telekom Srbija (EUR 0.4 billion) in particular had a positive impact. n Dividend payments including to non-controlling interests (EUR 3.4 billion) and effects in connection with the AT&T transaction (EUR 0.5 billion) and the acquisition of spectrum (EUR 0.3 billion) had a negative impact, as did exchange rate and other effects (EUR 0.2 billion). n Net profit decreased by EUR 7.9 billion to a net loss of EUR 6.0 billion. n Adjusted net profit decreased from EUR 2.9 billion to EUR 2.3 billion. n Asset impairments, including on goodwill, at T-Mobile USA (around EUR 7.4 billion after taxes) in particular had a negative impact. Excluding the impairment loss, we generated net profit from operations of EUR 1.4 billion. n Shareholders’ equity decreased by EUR 9.7 billion compared with the end of 2011. n The net loss of EUR 6.0 billion, the recognition of actuarial losses (EUR 1.1 billion after taxes) directly in equity, and dividend payments including to non-controlling interests (EUR 3.4 billion) reduced the level of shareholders’ equity. n Positive effects of EUR 0.6 billion from currency translation. n The equity ratio decreased to 28.0 percent. n Despite the decrease in shareholders’ equity, the equity ratio remained within our target range of between 25 and 35 percent. n Total assets decreased by 11.7 percent, mainly as a result of the asset impairments, including on goodwill, at T-Mobile USA (around EUR 10.6 billion) and dividend payments including to non-controlling interests (EUR 3.4 billion). Net debt. (billions of €) 40.1 39.0 Dec. 31, 2011 Sept. 30, 2012 Net profit/loss. (billions of €) 1.9 (6.0) Q1 – Q3 2011 Q1 – Q3 2012 Shareholders’ equity. (billions of €) 39.9 30.3 Dec. 31, 2011 Sept. 30, 2012 Equity ratio. (%) 32.6 28.0 Dec. 31, 2011 Sept. 30, 2012 For a more detailed explanation, please refer to the section “Development of business in the Group” (page 9).

To our shareholders 7 Historical performance of the T-Share as of September 30, 2012. (%) Since beginning of the year 1 year 3 years 5 years Total return of the T-Share (dividend reinvested) DAX 30 13.4 18.8 20 29 27 26 Dow Jones Europe STOXX 600 Telecommunications© 1.7 9 15 2 (8) (9) The stock markets remained highly volatile in the third quarter of 2012. Uncer- tainty persisted, primarily due to the still unresolved debt problems in European crisis countries, especially Greece and Spain. There were also increasing signs of recession for the entire eurozone economy in the third quarter. Upwards movement in the European telecommunications sector was clearly more restrained. It continued to be dragged down by profit warnings and dividend cuts at a number of competitors. The Dow Jones Europe STOXX 600 Telecommunications© ended the first nine months of 2012 up 1.7 percent. The DAX nevertheless climbed 18.8 percent year-on-year in the first nine months. The main driver on the capital markets was the expansionary monetary policy of central banks around the world. A promise by ECB president Mario Draghi to save the euro at any cost caused the stock markets to rally in the third quarter of 2012. Most recently the European Central Bank announced a program allowing for unlimited purchases of bonds from states in crisis such as Spain and Italy, if necessary. This announcement gave a further boost to share prices. Meanwhile, Deutsche Telekom substantially increased its lead on the sector index in the third quarter of 2012. The T-Share rose by 13.4 percent in the first three quarters of 2012 on a total return basis (share price performance plus reinvested dividend). The strong performance of the T-Share was attributable to the continued sound financial figures from operations and Deutsche Telekom’s confirmed shareholder remuneration policy. Highlights in the third quarter of 2012. T-Mobile USA receives USD 2.4 billion for cell towers. On September 28, 2012, T-Mobile USA concluded a framework agreement with Crown Castle International Corp., Houston/United States (Crown Castle) concerning the leas- ing and use of around 6,400 cell sites and, additionally, the sale of around 800 by T-Mobile USA. In exchange for a one-time payment of USD 2.4 billion, Crown Castle will receive the sole right to use and lease out the cell sites for an average of 28 years. Payment will take place once the agreement has been concluded, which is scheduled for the fourth quarter of 2012. T-Mobile USA will continue to operate its mobile equipment on these cell towers and, to this end, lease back the required capacity from Crown Castle. Previously unused infra- structure will thus be available for lease by third parties. Investments in networks and new spectrum. In Germany, we have already met the LTE roll-out obligations in 15 of the 16 federal states. Thus the only gaps in coverage left to close are in Brandenburg. In Romania we purchased new spectrum in the frequency ranges of 0.8 GHz, 1.8 GHz and 2.6 GHz and extended our existing licenses in the frequency ranges of 0.9 GHz and 1.8 GHz. The new licenses are valid from April 2014 and have a term of 15 years. New products. On August 31, 2012, we launched our De-Mail service, which allows users to send and receive documents over the Internet securely, confidentially and verifiably. Since the start of September 2012, our mobile customers in Germany have been able to surf the Internet on a smartphone at up to 100 Mbit/s using our new add-on LTE Speed Option. In Germany, we are currently the only provider to offer such speed, and the only one to do so on the iPhone 5, among other handsets. From October 2012, as an exclusive partner to the music streaming service Spotify, we will be the first German telecom- munications company to offer a flat-rate plan that includes the Spotify premium service as an add-on option. Partnerships. We concluded a long-term partnership with network technology provider ANTEC Servicepool GmbH in the third quarter. We signed an agree- ment on TV and radio coverage for around 33,000 apartments in the Hanover region, including the target of future coverage of additional homes as part of the partnership. Following the partnership concluded last year with Deutsche Annington, this partnership underlines our re-entry into the German cable market. New corporate customer agreements. Our corporate customers arm T-Systems extended its partnership with the Swiss chemicals group Clariant for another five years. Clariant purchases worldwide ICT services and appli- cations from T-Systems. The Catalan government has signed new deals with T-Systems worth more than EUR 400 million in total. The scope includes operation of workstation computers, applications, telecommunications, and data center infrastructure. The energy group BP has chosen cloud services provided by T-Systems for its employee communication. This will allow more than 83,000 BP employees around the world to access their usual communi- cation services from anywhere at any time. Awards. For the third time in a row, our mobile network in Germany has taken the award for the best network of the year in the CHIP Online portal’s national network test. This year, we have once again made it into the two most renowned sustainability indexes, the Dow Jones Sustainability Index World and Dow Jones Sustainability Index Europe. Only the top 10 percent of companies in a sector are included in these indexes and thus recommended to sustainability-oriented investors and fund managers as top investments.

Interim Group management report 9 EU roaming regulation from July 2012. A new EU roaming regulation took effect on July 1, 2012 after the European Parliament and the Council of Ministers had previously agreed on a final version with the European Commission. In contrast to the European Commission’s original draft dated July 6, 2011, the final regu- lation contains tighter provisions, setting lower price caps and expanding the transparency measures to also include roaming outside the European Union. The extensive obligation to provide wholesale access – including for MVNOs – remained in place, as did the unbundling of roaming services and national services scheduled to apply from July 2014. The prior-year figures have been adjusted for better comparability. For more information, please refer to the disclosures under segment reporting in the interim consolidated financial statements (pages 38 and 39). With regard to our Group strategy, please refer to the notes in the 2011 combined management report (2011 Annual Report, page 66 et seq.) and with regard to the further development of our strategy, please refer to the Interim Group Report for January 1 to June 30, 2012 (page 9). Group structure, management and strategy. With regard to our Group structure and management, please refer to the notes in the 2011 combined management report (2011 Annual Report, page 60 et seq.). No significant changes were recorded in this area from the Group’s point of view. Since January 1, 2012, Deutsche Telekom has pooled the tasks and functions of the Digital Services growth business as well as the Internet service provider STRATO, which as of December 31, 2011 were still largely part of the Germany operating segment, as the Digital Business Unit (DBU) under Group Headquarters & Shared Services. As of July 1, 2012, Deutsche Telekom reorganized the Group’s IT infrastructure and pooled all internal IT units from the Germany and Systems Solutions operating segments as well as Group Headquarters & Shared Services into the new Telekom IT unit within the Systems Solutions operating segment. Development of business in the Group. Results of operations of the Group. Net revenue. In the first nine months of the 2012 financial year, we generated net revenue of EUR 43.5 billion, which was slightly down compared with the same period in the prior year. Intense competition, price changes imposed by regulatory authorities and the strained economic situation in most countries of our Europe operating segment had a negative effect. Net exchange rate effects of around EUR 0.9 billion on the proportion of net revenue generated internationally, especially from the translation of U.S. dollars into euros, had a positive impact on net revenue. Our United States operating segment increased its revenue on a euro basis, whereas all others recorded decreases. For details on the revenue trends in our Germany, Europe, United States and Systems Solutions operating segments as well as at Group Headquarters & Shared Services, please refer to the section “Development of business in the operating segments” (page 13 et seq.). Contribution of the operating segments to net revenue. Net revenue Germany Europe United States Systems Solutions Group Headquarters & Shared Services Intersegment revenue Q1 2012 millions of € 14,432 5,659 3,575 3,847 2,456 717 (1,822) Q2 2012 millions of € 14,379 5,610 3,584 3,816 2,486 732 (1,849) Q3 2012 millions of € 14,651 5,736 3,654 3,915 2,245 727 (1,626) Q3 2011 millions of € 14,670 5,810 3,873 3,683 2,513 743 (1,952) Change % (0.1) (1.3) (5.7) 6.3 (10.7) (2.2) 16.7 Q1 – Q3 2012 millions of € 43,462 17,005 10,813 11,578 7,187 2,176 (5,297) Q1 – Q3 2011 millions of € 43,742 17,396 11,352 10,963 7,259 2,219 (5,447) Change % (0.6) (2.2) (4.7) 5.6 (1.0) (1.9) 2.8 FY 2011 millions of € 58,653 23,206 15,124 14,811 9,953 2,977 (7,418) Breakdown of revenue by region. (%) Contribution of the operating segments to net revenue. (%) 1.4 27.0 1.8 11.1 26.6 44.1 Germany Europe (excluding Germany) North America Other countries 36.8 Germany Europe United States Systems Solutions 27.5 23.7 Group Headquarters & Shared Services

Interim Group management report 11 Average headcount decreased by 3.7 percent compared with the prior-year reporting period. This trend is largely attributable to a lower international headcount, which was down by 5.7 percent. In our Europe operating segment, downsizing programs carried out as a result of programs to enhance efficiency contributed to this lower figure. In the United States operating segment, fewer staff were employed in customer support, sales and administration compared with the prior-year period. Average headcount in Germany decreased by 1.7 percent, mainly due to socially responsible staff restructuring and reduction in the Germany operating segment and a reduction in Vivento’s headcount at Group Headquarters & Shared Services. The overall decrease was partially offset by increased staff levels in the Systems Solutions operating segment, attributable in part to employees taken on in connection with big deals. Financial position of the Group. Structure of the statement of financial position. (millions of €) 100 % Intangible assets 39 % Assets Liabilities and shareholders’ equity 108,234 122,542 122,542 108,234 Property, plant and equipment Investments accounted for using the equity method Trade receivables Other assets 35 % 6 % 6 % 14 % 41 % 34 % 6 % 5 % 14 % 31 % 8 % 7 % 11 % 33 % 5 % 7 % 5 % 5 % 33 % 10 % 5 % 12 % 28 % Non-current financial liabilities Current financial liabilities Provisions for pensions and other employee benefits Deferred tax liabilities Trade and other payables Other liabilities Shareholders’ equity Sept. 30, 2012 Dec. 31, 2011 Dec. 31, 2011 Sept. 30, 2012 The level of total assets decreased by EUR 14.3 billion compared with December 31, 2011. This was mainly due to the following effects. The decrease of EUR 8.0 billion in intangible assets to EUR 42.1 billion primarily resulted from the impairment loss of EUR 8.7 billion (before taxes) recognized in the United States operating segment and amortization of EUR 2.4 billion. This reduction was partially offset by additions of EUR 2.5 billion (of which EUR 0.9 billion for AWS spectrum licenses reclassified from other non-current assets) and exchange rate effects of EUR 0.3 billion, mainly from the Polish zloty. The decrease of EUR 4.4 billion in property, plant and equipment to EUR 37.5 billion was primarily attributable to depreciation of EUR 5.9 billion, the impairment loss of EUR 1.9 billion (before taxes) recognized in the United States operating segment and reclassifications to non-current assets and disposal groups held for sale of EUR 0.7 billion. The decrease was partially offset by additions of EUR 4.6 billion. Other assets as of September 30, 2012 included the following significant effects: a decrease of EUR 0.9 billion in other non-current assets in connection with the capitalization of AWS spectrum licenses as intangible assets. These licenses were part of the compensation from AT&T relating to the termination of the agreement to sell T-Mobile USA. Non-current assets and disposal groups held for sale increased by EUR 0.4 billion to EUR 0.8 billion. This increase is largely attributable to the agreed transaction with Crown Castle on the sale of cell sites in the United States. The sale of the shares in Telekom Srbija on January 25, 2012 had an offsetting effect. Current and non-current financial liabilities decreased by EUR 2.7 billion compared with the end of 2011 to EUR 45.6 billion in total. The main effects on financial liabilities are described under net cash used in financing activities on page 38 of the interim consolidated financial statements. Currency translation effects of EUR 0.2 billion increased financial liabilities. The EUR 1.7 billion increase in provisions for pensions and other employee benefits was primarily attributable to actuarial losses of EUR 1.6 billion. The decrease of EUR 3.1 billion in deferred tax liabilities to EUR 5.4 billion mainly resulted from the impairment loss recognized on intangible assets and property, plant and equipment in the United States operating segment. Shareholders’ equity decreased by EUR 9.7 billion compared with December 31, 2011, due to the loss of EUR 5.5 billion, dividend payments including to non-controlling interests of EUR 3.4 billion, actuarial losses of EUR 1.1 billion (after taxes) and the sale of Telekom Srbija (EUR 0.2 billion). Currency translation effects of EUR 0.6 billion recognized directly in equity – resulting primarily from the translation of sterling and the Polish zloty into euros – increased shareholders’ equity.

Interim Group management report 13 Comparison of the past twelve months. Although there are no significant seasonal factors that affect Deutsche Telekom’s earnings and financial position, we have compared the past twelve months with the full year 2011 as results were negatively impacted by special factors. Oct. 1, 2011 until Sept. 30, 2012 millions of € FY 2011 millions of € 58,373 (5,786) (26,231) 20,445 18,562 (7,388) 2,234 (1.72) 58,653 5,586 (14,436) 20,022 18,685 557 2,851 0.13 14,550 14,325 (7,811) (8,260) 282 7,021 356 6,421 Revenue and earnings Net revenue Profit (loss) from operations (EBIT) Depreciation, amortization and impairment losses EBITDA EBITDA (adjusted for special factors) Net profit (loss) Net profit (loss) (adjusted for special factors) Earnings per share basic/diluted Cash flows Net cash from operating activities* Cash outflow for investments in intangible assets (excluding goodwill and before spectrum investment) and property, plant and equipment (cash capex) Proceeds from disposal of intangible assets (excluding goodwill) and property, plant and equipment Free cash flow (before dividend payments and spectrum investment)* * before PTC and AT&T transactions. Customer development. Differences in the unadjusted figures for EBIT; depreciation, amortization and impairment losses; net profit/loss; and earnings per share are attributable to an impairment loss recognized in the United States operating segment and other special factors. In addition, the classification of T-Mobile USA as a discontinued operation was reversed in the fourth quarter of 2011. Consequently, deprecia- tion and amortization totaling EUR 1.1 billion discontinued during the year was retroactively recognized in December 2011. This contributed significantly to the difference in adjusted net profit. The difference in (unadjusted) EBITDA is primarily attributable to special factors. Please refer to the information on special factors in the section “Results of operations of the Group” on page 9 et seq. Development of business in the operating segments. Germany. Since January 1, 2012, Deutsche Telekom has pooled the tasks and functions of the Digital Services growth business as well as the Internet service provider STRATO, which as of December 31, 2011 were still largely part of the Germany operating segment, as the Digital Business Unit (DBU) under Group Headquar- ters & Shared Services. As of July 1, 2012, Deutsche Telekom reorganized the Group’s IT structure and pooled all internal IT units from the Germany and Systems Solutions operating segments as well as Group Headquarters & Shared Services into the new Telekom IT unit within the Systems Solutions operating segment. The prior-year figures have been adjusted for better comparability. For more information, please refer to the disclosures under segment reporting in the interim consolidated financial statements (pages 38 and 39). Fixed-network lines. (’000) TV customers (including satellite).* (’000) 23,694 23,399 23,140 22,904 22,620 1,375 1,553 1,725 1,830 1,906 Sept. 30, 2011 Dec. 31, 2011 Mar. 31, 2012 June 30, 2012 Sept. 30, 2012 Sept. 30, 2011 Dec. 31, 2011 Mar. 31, 2012 June 30, 2012 Sept. 30, 2012 Retail broadband lines. (’000) * Customers connected Mobile customers. (’000) 12,201 12,265 12,367 12,414 12,424 34,905 35,403 35,100 35,470 35,994 17,834 18,221 18,114 18,578 19,133 Sept. 30, 2011 Dec. 31, 2011 Mar. 31, 2012 June 30, 2012 Sept. 30, 2012 Sept. 30, 2011 Dec. 31, 2011 Mar. 31, 2012 June 30, 2012 Sept. 30, 2012 Contract customers

Interim Group management report 15 Consumers. Connected life across all screens. Line losses in traditional fixed-network telephony decreased year-on-year in the first three quarters of 2012. In the intensely contested broadband market, we continued to grow in line with the market. For our television service Entertain, we further increased the rate of pay TV packages, e.g., LIGA total!, Big TV and HD. The number of contract customers in the mobile communications portfolio increased by 6.0 percent in the first three quarters of 2012 compared with December 31, 2011. In particular, rate packages with integrated data flat rates for the mobile Internet (Call & Surf Mobil, Complete Mobil, and Mobile Data), especially the promotional rates included, sold well. Through these packages we migrated a large number of customers from pure voice rates to higher-value data rate plans. In the area of text messaging, we were even more successful in marketing our “SMS Flat all net” rate option in the first three quarters of 2012. The decrease in the number of prepay customers compared with December 31, 2011 is largely attributable to the deactivation of inactive cards. This decline was partly compensated by measures including the positioning of congstar in our Telekom shops for the first time. Business Customers. Connected work with innovative solutions. The number of fixed-network lines in the Business Customer area remained virtually unchanged compared with year-end 2011 at 3.5 million. In Internet usage, customers are increasingly opting for plans with higher bandwidths such as Business Complete. Products in the area of connected work developed positively. Accordingly, we recorded a growth trend in our CompanyConnect dedicated Internet connections. In the field of data communications, we significantly increased the number of networks and connections with Internet-based data networks (IP VPNs) and high-bandwidth location networking. With a clear focus on rate plans with integrated data flat rates for the mobile Internet, the new set of mobile plans we introduced in February 2011 helped to increase subscriber numbers compared with the prior year. Total subscriber numbers rose by a further 5.4 percent compared with the year-end 2011 in the area of machine-to-machine mobile communications as well as among contract customers, due not least to the marketing kick-off of new, attractive mobile rate plans for business customers. In the first three quarters of 2012, we won (back) a number of business customers for our mobile services, such as BMW, Heidelberger Druck and Schwäbisch Hall. Wholesale. Unbundled wholesale lines increased by 61 thousand, whereas the number of bundled wholesale lines declined by 142 thousand. This trend is expected to continue in the next few years, due in particular to the fact that our competitors are switching from bundled to unbundled wholesale products or to their own infrastructure. The number of unbundled local loop lines (ULLs) decreased by 145 thousand compared with year-end 2011. Development of operations. Total revenue Consumers Business Customers Wholesale Value-Added Services Other Profit from operations (EBIT) EBIT margin % Depreciation, amortization and impairment losses EBITDA Special factors affecting EBITDA EBITDA (adjusted for special factors) EBITDA margin (adjusted for special factors) % Cash capex Q1 2012 millions of € 5,659 2,997 1,418 1,034 98 112 Q2 2012 millions of € 5,610 2,999 1,404 1,005 92 110 Q3 2012 millions of € 5,736 3,097 1,416 1,021 87 115 Q3 2011 millions of € 5,810 3,137 1,401 1,048 106 118 Change % (1.3) (1.3) 1.1 (2.6) (17.9) (2.5) Q1 – Q3 2012 millions of € 17,005 9,093 4,238 3,060 277 337 Q1 – Q3 2011 millions of € 17,396 9,359 4,206 3,178 317 336 Change % (2.2) (2.8) 0.8 (3.7) (12.6) 0.3 FY 2011 millions of € 23,206 12,497 5,615 4,209 425 460 965 17.1 (1,099) 2,064 (279) 2,343 41.4 (903) 1,187 21.2 (1,104) 2,291 (57) 2,348 41.9 (819) 1,302 22.7 (1,083) 2,385 (16) 2,401 41.9 (677) 1,356 23.3 (1,089) 2,445 (18) 2,463 42.4 (1,080) (4.0) 0.6 (2.5) 11.1 (2.5) 37.3 3,454 20.3 (3,286) 6,740 (352) 7,092 41.7 (2,399) 3,494 20.1 (3,208) 6,702 (557) 7,259 41.7 (2,590) (1.1) (2.4) 0.6 36.8 (2.3) 7.4 4,520 19.5 (4,344) 8,864 (689) 9,553 41.1 (3,506) Total revenue. We took measures to ensure continued value-enhancing growth in our core markets, i.e., the broadband fixed network and mobile communications. Revenue in the first three quarters of 2012 was down 2.2 percent year-on-year, which was mainly attributable to the downward trend in voice telephony, both in mobile and fixed-network business. This trend was partly offset by increasing demand for complete packages comprising mobile data or TV rate plans. Revenue growth in the fixed network was a result of the successful marketing of Entertain and add-on options. However, this positive trend was not sufficient to offset the negative effects on revenue. Added to this were price effects result- ing from regulatory decisions – for example, the reduction in interconnection rates in July 2011.

Interim Group management report 17 Sept. 30, 2012 thousands 10,089 4,688 155 67 1,925 61,536 3,078 1,170 7,778 2,443 1,114 6,470 1,419 868 4,820 15,575 105 105 5,415 1,322 652 2,443 288 280 4,761 977 473 2,313 4,076 457 249 7,886 June 30, 2012 thousands 10,248 4,642 154 60 1,915 60,814 3,137 1,136 7,856 2,485 1,104 6,510 1,439 864 4,821 15,048 105 105 5,377 1,342 652 2,378 290 281 4,744 993 470 2,325 4,069 457 243 7,686 Change Sept. 30, 2012/ June 30, 2012 % (1.6) 1.0 0.6 11.7 0.5 1.2 (1.9) 3.0 (1.0) (1.7) 0.9 (0.6) (1.4) 0.5 0.0 3.5 0.0 0.0 0.7 (1.5) 0.0 2.7 (0.7) (0.4) 0.4 (1.6) 0.6 (0.5) 0.2 0.0 2.5 2.6 Dec. 31, 2011 thousands 10,563 4,588 153 50 1,844 60,293 3,317 1,126 7,885 2,487 1,078 6,499 1,486 848 4,817 14,161 100 100 5,381 1,387 651 2,418 294 284 4,909 1,021 464 2,326 4,060 471 239 7,838 Change Sept. 30, 2012/ Dec. 31, 2011 % (4.5) 2.2 1.3 34.0 4.4 2.1 (7.2) 3.9 (1.4) (1.8) 3.3 (0.4) (4.5) 2.4 0.1 10.0 5.0 5.0 0.6 (4.7) 0.2 1.0 (2.0) (1.4) (3.0) (4.3) 1.9 (0.6) 0.4 (3.0) 4.2 0.6 Sept. 30, 2011 thousands 10,751 4,530 156 48 1,720 59,467 3,433 1,136 7,873 2,523 1,052 6,540 1,506 832 4,790 13,406 93 93 5,399 1,395 648 2,485 297 287 4,935 1,029 457 2,318 3,934 476 230 7,787 Change Sept. 30, 2012/ Sept. 30, 2011 % (6.2) 3.5 (0.6) 39.6 11.9 3.5 (10.3) 3.0 (1.2) (3.2) 5.9 (1.1) (5.8) 4.3 0.6 16.2 12.9 12.9 0.3 (5.2) 0.6 (1.7) (3.0) (2.4) (3.5) (5.1) 3.5 (0.2) 3.6 (4.0) 8.3 1.3 Fixed-network lines Retail broadband lines Wholesale bundled lines Wholesale unbundled lines Unbundled local loop lines (ULLs) Mobile customers Fixed-network lines Broadband lines Mobile customers Fixed-network lines Broadband lines Mobile customers Fixed-network lines Broadband lines Mobile customers Mobile customers Fixed-network lines Broadband lines Mobile customers Fixed-network lines Broadband lines Mobile customers Fixed-network lines Broadband lines Mobile customers Fixed-network lines Broadband lines Mobile customers Mobile customers Fixed-network lines Broadband lines Mobile customers Europe, total Greece Romania Hungary Poland Czech Republic Croatia Netherlands Slovakia Austria Othera a Other: national companies of Bulgaria, Albania, the F.Y.R.O. Macedonia and Montenegro. Total. In the first nine months of 2012, our Europe operating segment showed robust development in terms of the customer base compared with year-end 2011. This was the case in most countries of our segment, despite tough competition and the still strained economic situation. In the fixed network, we increased the number of broadband lines compared with the end of 2011 thanks to the focus on rolling out broadband technology and thus partially offset the line losses in analog fixed-network business. In mobile communications, we recorded an increase of around 2.1 percent in the total customer base compared with the end of the prior year. This strong growth is attributable to contract net additions as well as to prepay net additions. In the prepay segment, the number of customers only grew markedly in Poland due to a change in the deregistration procedure in response to a general change in deregistration policies across the industry in the previous year. Fixed network. Telephony, Internet and TV. The IPTV business again proved itself as a consistent growth driver. Compared with the end of 2011, the number of IPTV customers increased by around 12.0 percent. Due to innovative rate plans, for example TV together with Internet access, we further expanded our customer base in most countries of our operating segment with fixed-network operations. Compared with December 31, 2011, the number of retail broadband lines marketed increased further by around 2.2 percent to 4.7 million lines. This trend is especially pronounced in a comparison with September 30 of the prior year, with growth of 3.5 percent. Almost all countries in our Europe operating segment contributed to this. The largest absolute additions compared with the end of the prior year were achieved in Greece and Romania – due in particular to DSL business. We also generated marked growth in broadband lines in Hungary and the Czech Republic, primarily in broadband cable connections in Hungary and in DSL business in the Czech Republic. Around 10.1 million customers in our Europe operating segment used a fixed-network line as of September 30, 2012, a decrease of 4.5 percent compared with the end of 2011. This is largely the result of line losses in traditional telephony, especially in Greece, Croatia, Romania and the F.Y.R.O. Macedonia. In Greece and Romania in particular, the economic situation and the resulting intense competitive pressure caused a decline in the number of customers.

Interim Group management report 19 Total revenue. In the first nine months of 2012, our Europe operating segment generated total revenue of EUR 10.8 billion, down 4.7 percent compared with the prior-year level. This decline was primarily attributable to two factors. First, negative exchange rate effects had an adverse impact on our revenue, especially from the translation of the Hungarian forint and the Polish zloty into euros. Adjusted for the exchange rate effects, which accounted for some 31 percent of the decrease, segment revenue decreased by just 3.3 percent against the prior- year period. Second, the reduction in mobile termination rates imposed by the regulatory authorities caused further losses in revenue from operations in most countries of our segment. This decrease was more significant in the third quarter of 2012 than in the previous quarters. In addition, price reductions due to tough competition and not least also due to the continued challenging economic situation, especially in Southern and Eastern European countries, impacted negatively on our revenue from operations. Around half of the de- crease in revenue from operations, for example, was attributable to our Greek subsidiary. In Croatia and Slovakia, fixed-network and mobile business was also impacted by declines in revenue. At segment level, there were slight compensatory effects from revenue increases in international wholesale business and growth in broadband, television, ICT and energy. These growth areas partially compensated for the negative revenue effects from voice telephony. This shows the success of our strategy to drive forward the expansion of broadband technologies in both fixed-network and mobile operations in combination with attractive rate plans and a broad portfolio of terminal equipment. In mobile communications, we recorded tangible further growth in data revenue, with an increase of around 14 percent to EUR 0.9 billion. Adjusted for exchange rate effects, data revenue even in- creased by approximately 17 percent compared with the end of the prior-year period. Almost all countries of our Europe operating segment, but in particular the Netherlands, Austria, Poland and the Czech Republic, contributed to this growth. EBITDA, adjusted EBITDA. Our Europe operating segment generated adjusted EBITDA of EUR 3.7 billion in the first nine months of 2012, a year-on-year decrease of 5.8 percent. Without the overall negative exchange rate effects, especially from the translation of the Hungarian forint, the Polish zloty and also the Czech koruna, adjusted EBITDA decreased by just 4.3 percent. This operational decline at segment level resulted from lower adjusted EBITDA compared with the prior-year period, especially in Greece, Hungary, Slovakia and Poland. These decreases were partially offset by higher contributions of adjusted EBITDA in the Netherlands and in the Romanian mobile operations. Overall, the decrease in revenue year-on-year had a negative impact on the development of EBITDA. In addition, changes in legislation (for example, as part of national austerity programs) adversely affected our EBITDA. In Hungary, for instance, the special levy introduced as of July 1, 2012 on top of the existing special tax, had a negative impact on our adjusted EBITDA. In view of the current policy pursued by the Hungarian government, we cannot exclude that further extraordinary government measures may have an impact on earnings in addition to the special levy the introduction of which had not been expected. By systematically reducing overheads through our efficiency enhancement measures, which are primarily reflected in lower personnel costs and cost of materials, as well as by addressing customer needs in a targeted way, especially with regard to customer retention, we partially offset the negative effects from the decline in revenue. Development of operations in selected countries. Greece. Revenue in Greece totaled EUR 2.5 billion in the first nine months of 2012, a year-on-year decrease of 7.7 percent, which was mainly attributable to fixed-network business and here primarily to line losses of some 10 percent in traditional telephony. Since regulation of fixed-network business in Greece continues to be very strict, we were not yet able to proceed with broadband customer acquisitions as planned and thus to generate the associated revenue in full. In mobile business, revenues were also down year-on-year due to lower pricing, both as a result of the reduction in termination rates imposed by the regulatory authorities and due to competition. In addition, the continued diffi- cult economic situation also had an impact on revenue development, which is clearly reflected in the decline in service revenues and lower terminal equipment sales. Adjusted EBITDA decreased to EUR 920 million in Greece during the reporting period, a year-on-year decline of 6.0 percent, mainly due to the decrease in revenue. We partly offset the revenue effects through targeted measures for customer acquisition and retention in mobile business and through our programs to increase efficiency in mobile and fixed-network business. The success of the efficiency enhancement programs is primarily reflected by lower personnel costs due in part to a reduced headcount and in part to the agreements with the trade unions concluded in the previous year. Hungary. In Hungary, we generated revenue of EUR 1.0 billion in the first nine months of 2012, a year-on-year decrease of 5.2 percent. Adjusted for the negative exchange rate performance of the Hungarian forint against the euro, revenue from operations increased by 1.6 percent. This year-on-year increase is attributable to growth, in particular in the energy resale business. Increased overall fixed-network revenue for broadband – especially from optical fiber and cable lines –, television and ICT as well as for terminal equipment sales almost offset the decline in voice telephony. In mobile communications, service rev- enues adjusted for exchange rate effects declined only slightly compared with the prior-year period, mainly as a result of price cuts due to competition as well as a reduction in termination rates imposed by the regulatory authorities. These effects were also partially offset within service revenues thanks to higher data revenues as a result of increased customer usage as well as a larger contract customer base overall. In addition, increased terminal equipment sales made a positive contribution to revenue, mainly due to smartphones accounting for a large proportion of all terminal devices sold. Adjusted EBITDA amounted to EUR 368 million in the first nine months of 2012, representing a year-on-year decrease of 14.8 percent. As with revenue, this decrease was due to the still unfavorable exchange rate performance of the Hungarian forint against the euro; adjusted for exchange rate effects, adjusted EBITDA declined by 8.7 percent. This decline is mainly attributable to higher direct costs in the energy resale business compared with the prior-year period and the special levy introduced as of July 1, 2012. Significant savings in over- heads had a positive effect on adjusted EBITDA. Poland. Revenue in Poland totaled EUR 1.3 billion in the first nine months of this year, down by 5.9 percent year-on-year. Adjusted for the significantly negative exchange rate performance of the Polish zloty against the euro, revenue decreased only slightly compared with the prior-year period. Intense competition and the related price war on the Polish mobile market as well as the reduction in termination rates imposed by the regulatory authorities had a negative impact on our revenue. As a result, service revenues declined, especially in the consumer segment, due to lower revenue from voice telephony. This was partially offset by significant growth in revenue from data business. In addition, increased terminal equipment sales made a positive contribution to revenue, mainly due to the successful marketing of smartphones.

Interim Group management report 21 United States Mobile customers Contract customers Branded Machine-to-machine (M2M) Prepay customers Branded MVNOs Sept. 30, 2012 thousands June 30, 2012 thousands Change Sept. 30, 2012/ June 30, 2012 % Dec. 31, 2011 thousands Change Sept. 30, 2012/ Dec. 31, 2011 % Sept. 30, 2011 thousands Change Sept. 30, 2012/ Sept. 30, 2011 % 33,327 23,763 20,809 2,954 9,564 5,659 3,905 33,168 24,087 21,300 2,787 9,081 5,295 3,786 0.5 (1.3) (2.3) 6.0 5.3 6.9 3.1 33,186 24,797 22,367 2,430 8,389 4,819 3,570 0.4 (4.2) (7.0) 21.6 14.0 17.4 9.4 33,711 25,598 23,074 2,524 8,113 4,599 3,514 (1.1) (7.2) (9.8) 17.0 17.9 23.0 11.1 At September 30, 2012, the United States operating segment (T-Mobile USA) had 33.3 million customers, a net increase in customers of 141,000 compared to 33.2 million customers at December 31, 2011. This increase in net customers in the first nine months of 2012 was an improvement compared to a net decrease of 24,000 for the first nine months of 2011. In the first nine months of 2012, prepay customer growth more than offset contract customer losses. In the first nine months of 2012, T-Mobile USA lost 1,034,000 contract customers compared to 849,000 contract customers lost in the first nine months of 2011. In the first nine months of 2012, branded contract customer losses were im- pacted by a decline in branded gross customer additions partially offset by lower branded contract customer churn, which continues to be a key strategic focus for 2012. Additionally, total machine-to-machine customers continued to grow in the first nine months of 2012, although at a slower rate than the first nine months of 2011, to a total of 3.0 million customers at September 30, 2012. In the first nine months of 2012, T-Mobile USA had 1,175,000 net prepay customer additions compared to 825,000 net prepay customer additions in the first nine months of 2011. The significant improvement in net branded prepay customer additions in the first nine months of 2012 was due to the continued success of unlimited Monthly 4G prepay plans and customer migration to prepay plans due to the discontinuation of the Company’s FlexPay product that historically had higher churn. Additionally, MVNO customers continued to grow in the first nine months of 2012, and totaled 3.9 million at September 30, 2012. T-Mobile USA’s blended churn decreased to an average of 3.3 percent per month in the first nine months of 2012, compared to an average of 3.4 percent per month in the first nine months of 2011. The year-on-year decrease in blended churn was due primarily to lower branded contract churn from a change in the mix of T-Mobile USA’s contract product portfolio and the continued strategic focus on churn reduction. Compared to the prior period, branded contract churn decreased by 0.3 percentage points to 2.3 percent. In order to improve the contract product portfolio, the Company discontinued certain products that had higher churn, such as FlexPay Contract, and introduced the new “Unlimited 4G data” plans in September. The continued strategic focus on churn reduction, including credit optimization initiatives, also contributed to the decrease. Development of operations. Total revenue Profit (loss) from operations (EBIT) EBIT margin % Depreciation, amortization and impairment losses EBITDA Special factors affecting EBITDA EBITDA (adjusted for special factors) EBITDA margin (adjusted for special factors) % Cash capex Q1 2012 millions of € 3,847 Q2 2012 millions of € 3,816 Q3 2012 millions of € 3,915 Q3 2011 millions of € 3,683 Change % 6.3 Q1 – Q3 2012 millions of € 11,578 Q1 – Q3 2011 millions of € 10,963 Change % 5.6 FY 2011 millions of € 14,811 344 8.9 (561) 905 (78) 983 25.6 (571) 396 10.4 (640) 1,036 (22) 1,058 27.7 (425) (10,108) n.a. (11,241) 1,133 139 994 25.4 (865) 976 26.5 – 976 (49) 1,025 27.8 (527) n.a. n.a. 16.1 n.a. (3.0) (9,368) (80.9) (12,442) 3,074 39 3,035 26.2 2,245 20.5 (463) 2,708 (80) 2,788 25.4 n.a. n.a. 13.5 n.a. 8.9 (64.1) (1,861) (1,550) (20.1) (710) (4.8) (4,407) 3,697 (134) 3,831 25.9 (1,963)

Interim Group management report 23 Selected KPIs. Order entry. (millions of €) External revenue. (millions of €) 1,713 1,928 1,577 1,924 1,614 1,587 1,726 1,624 1,614 1,600 Q3 2011 Q4 2011 Q1 2012 Q2 2012 Q3 2012 Q3 2011 Q4 2011 Q1 2012 Q2 2012 Q3 2012 Revenue. (millions of €) 2,513 2,694 Adjusted EBIT. (millions of €) 2,456 2,486 2,245 54 Q3 2011 Q4 2011 Q1 2012 Q2 2012 Q3 2012 30 27 (2) (14) Q3 2011 Q4 2011 Q1 2012 Q2 2012 Q3 2012 Order entry millions of € 5,115 3,501 Sept. 30, 2012 June 30, 2012 Change Sept. 30, 2012/ June 30, 2012 % n.a. Computing & Desktop Services Number of servers managed and serviced Number of workstations managed and serviced Systems Integration Hours billed Utilization rate units millions millions % 56,404 1.93 4.7 84.9 56,404 1.95 3.1 84.8 – (1.0) n.a. 0.1p Dec. 31, 2011 7,396 58,053 2.00 n.a. n.a. Change Sept. 30, 2012/ Dec. 31, 2011 % n.a. (2.8) (3.5) n.a. n.a. Sept. 30, 2011 5,468 57,231 1.99 n.a. n.a. Change Sept. 30, 2012/ Sept. 30, 2011 % (6.5) (1.4) (3.0) n.a. n.a. Development of business. In the first nine months of 2012, the Systems Solutions operating segment concluded significant new deals, such as those with the Catalan government, Clariant, BP, Daimler, British American Tobacco and the Swiss industrial group Georg Fischer. Our standard solutions from our growth area of cloud comput- ing won out over strong competition, winning us the contracts with many of these corporate customers. T-Systems continued to expand its dynamic re- sources accordingly in the 2012 reporting period (please also refer to the 2011 Annual Report, page 105 et seq.). In another encouraging development, utilities company RWE Deutschland has selected Deutsche Telekom as its partner for the largest smart metering project to date in Germany. Order entry decreased by 6.5 percent compared with the first three quarters of the prior year. The figures in the first quarter of 2011 included the comprehensive outsourcing agreement with Everything Everywhere totaling approximately EUR 500 million. The new deals concluded in 2012 did not compensate for this effect. The number of servers managed and serviced declined compared with the prior-year period. This was largely due to technological progress. The increasing demand for our ICT services as a consequence of new deals is now met by more powerful servers and improved utilization of their capacity. A similar development can be seen at the data centers which have been consolidated to produce larger, more powerful units.

Interim Group management report 25 Development of operations. Total revenue Of which: Digital Business Unit Profit (loss) from operations (EBIT) Depreciation, amortization and impairment losses EBITDA Special factors affecting EBITDA EBITDA (adjusted for special factors) Of which: Digital Business Unit Cash capex Q1 2012 millions of € 717 194 Q2 2012 millions of € 732 204 Q3 2012 millions of € 727 205 Q3 2011 millions of € 743 199 Change % (2.2) 3.0 Q1 – Q3 2012 millions of € 2,176 603 Q1 – Q3 2011 millions of € 2,219 602 Change % (1.9) 0.2 FY 2011 millions of € 2,977 843 (411) (203) (208) (59) (149) 56 (145) (347) (196) (151) (65) (86) 44 (76) (362) (210) (152) (10) (142) 27 (54) (362) (206) (156) (44) (112) 52 (82) – (1,120) (1,269) (1.9) 2.6 77.3 (26.8) (48.1) 34.1 (609) (511) (134) (377) 127 (275) (594) (675) (324) (351) 149 (272) 11.7 (2.5) 24.3 58.6 (7.4) (14.8) (1.1) 1,274 (807) 2,081 2,698 (617) 168 (352) Total revenue. Total revenue at Group Headquarters & Shared Services in the reporting period decreased slightly by 1.9 percent year-on-year, primarily due to measures to make the use of floor space more efficient in the operating segments and lower demand for call center services within the Group. The Digital Business Unit generated revenue at approximately the level of the prior-year period. EBITDA, adjusted EBITDA. Adjusted EBITDA at Group Headquarters & Shared Services declined year- on-year in the first nine months of the 2012 financial year, mainly as a result of the decline in revenue and lower income from real estate sales. By contrast, increased income from trademark licenses had a positive impact, although this was reduced by lower take-up of services for international network technology within the Group and a one-time effect from the reversal of a provision at the Digital Business Unit in the prior year. Overall, EBITDA was negatively impacted by special factors of EUR 134 million in the reporting period, primarily due to expenses in connection with planned and announced staff-related measures, mainly for early retirement. The refund received from Kreditanstalt für Wiederaufbau in connection with a settlement reached in the United States in 2005 was a positive special factor. In the same period of 2011, EBITDA was negatively impacted by special factors of EUR 324 million, mainly due to expenses in connection with staff-related measures and expenses in connection with the intention to sell T-Mobile USA to AT&T. EBIT. Loss from operations (EBIT) decreased compared with the first three quarters of 2011, primarily as a result of the aforementioned special factors. Risks and opportunities. This section provides important additional information and explains recent changes in the risks and opportunities as described in the combined manage- ment report for the 2011 financial year (2011 Annual Report, page 131 et seq.). Readers are also referred to the Disclaimer at the end of this report. Business combination of T-Mobile USA and MetroPCS. Deutsche Telekom and the U.S. mobile company MetroPCS agreed to combine their business activities in the United States. For more details, please refer to “Events after the reporting period” (page 41) and “Depreciation, amortization and impairment losses” (pages 37 and 38) of the interim consolidated financial statements. The combined entity will be able to compete more aggressively with other national mobile operators in the United States thanks to an improved mobile spectrum position and additional financial resources. The transaction will create a combined entity on the U.S. mobile market with the objective of providing value leadership. It will make it possible to offer customers a wider selection of affordable products and services, improved network coverage and a clear-cut technology path to one common LTE network. The transaction is subject to approval by the U.S. Department of Justice (DOJ), the Federal Communications Commission (FCC) and the Committee on Foreign Investment in the United States (CFIUS). The approval of the MetroPCS share- holders is also required. Deutsche Telekom and MetroPCS expect to obtain all the necessary approvals in the first half of 2013. If the authorities refuse to ap- prove the transaction and if, as a result, it cannot be consummated, Deutsche Telekom would have to pay a compensation payment of USD 250 million. The risk of a competing bid for MetroPCS by one or more third parties cannot be ruled out. Should MetroPCS receive such as competing bid and then recom- mend to its shareholders to adopt this competing bid, Deutsche Telekom would be able to terminate the agreement with MetroPCS and receive a compensation payment of USD 150 million. In mid-October and thereafter, Deutsche Telekom AG also received notification of a total of six class actions filed in the United States against the business combination of MetroPCS and T-Mobile USA; four of these lawsuits were also directed at Deutsche Telekom AG and T-Mobile USA. Lawsuits of this nature are common in connection with business combinations in the United States and there is currently no reason to assume that this would lead to the prohibition of the merger.

Interim Group management report 27 in connection with future spectrum tendering processes and the role of Magyar Telekom as a universal service provider. A decision by parliament is expected in November 2012. At the time of preparing this report, neither our risk management system nor our management could see any material risks to the Company’s continued existence as a going concern. Other opportunities arising in connection with business activities. The development of our operations gives rise to opportunities, which we de- scribe in this section (please refer to “Business combination of T-Mobile USA and MetroPCS”) or in other parts of the interim Group management report. These opportunities include, for example the fact that only our mobile custom- ers in Germany can currently surf the Internet at speeds of up to 100 Mbit/s in our new LTE network (page 7), the revocation of the prohibition of the VDSL contingent model by the Federal Network Agency (page 8), our partnership with network technology provider ANTEC Servicepool GmbH (page 7) and T-Systems’ new corporate customer contracts (page 7). They also include the constant expansion of our cloud activities: As of August 31, 2012, we launched the De-Mail service, thereby enlarging our “cloud for all” portfolio. Events after the reporting period (September 30, 2012). For further explanations on the agreed business combination of T-Mobile USA and MetroPCS, please refer to “Events after the reporting period” (page 41) and “Depreciation, amortization and impairment losses” (pages 37 and 38). For the euro bonds issued after September 30, 2012 and the OTE exit scheme, please refer to “Events after the reporting period” (page 41) in the interim consolidated financial statements of this Interim Group Report. For further explanations on the proceedings by the Croatian competition authority against Hrvatski Telekom, please refer to the section “Risks and opportunities” (page 25 et seq.) and to the notes on contingent liabilities (pages 39 and 40). For explanations on Shareholder litigation, please refer to “Risks and opportunities” (page 25 et seq.) in this Interim Group Report. Actions concluded in 2012. Contingent asset – Claim for compensation against the Federal Republic of Germany and Kreditanstalt für Wiederaufbau. Following the ruling of the Federal Court of Justice in 2011 in favor of Deutsche Telekom, the state- owned KfW-Bankengruppe refunded the costs and related interest incurred by Deutsche Telekom for a settlement in a class action by shareholders in the United States. In April 2012 Deutsche Telekom received the total amount claimed – including interest accrued – of approximately EUR 96 million on the basis of a contractual agreement concluded in March 2012. In addition, Deutsche Telekom was successful in claiming EUR 20 million to be paid to the D&O insurers from which Deutsche Telekom had already received a refund in anticipation of the KfW payment. This concludes the legal dispute. Regulation. Regulation of fixed-network and mobile termination rates in Germany. On August 24, 2012 and August 22, 2012 respectively, the Federal Network Agency published the draft regulatory orders for fixed-network termination (IC) and mo- bile termination (MTRs). Although the Federal Network Agency does not plan to further tighten regulation through a “pure LRIC” approach for the regulation of rates, there is still a risk that rates will be cut further. In addition, the scope of regulation was also extended to fixed-network termination in next-generation networks. Assignment of frequencies. In mobile communications, 2012 and 2013 will see the extension of expiring licenses and the assignment of new frequencies in Germany as well as in a number of other European countries. This will give rise to general risks from the uncertainty with regard to the scope and avail- ability of future spectrum as well as in terms of the costs of acquiring frequency spectrum and the market entry of new providers. In Hungary, spectrum was awarded to a new state-owned mobile communications company in the spring of 2012. The conditions of the licenses stipulated that market launch would have to come before the end of 2012. Established network operators would be obligated to offer upstream services to this potential new market player. Magyar Telekom (Hungary) appealed against the frequency award. On September 17, 2012, a Hungarian court ruled that the state-run company Magyar Posta’s par- ticipation in the 900 MHz auction was unlawful. The Hungarian regulatory au- thorities were ordered to annul the results of the auction. As such, it is expected that the results of the auction will be annulled and a new allocation process, potentially together with spectrum from other frequency ranges (800 MHz, 1,800 MHz, 2,100 MHz and 2,600 MHz) will be held. For Magyar Telekom, this provides a new opportunity to increase its frequency resources as intended. In Germany, the Federal Network Agency plans to make a decision by mid-2013 on the process to amend regulation of the rights to 900/1,800 MHz spectrum (extension of licenses or reallocation by auction) from 2017. Intensified regulation for international subsidiaries. Regulation is also on the increase internationally. In the fixed network, Magyar Telekom (Hungary) was obligated to provide access to all elements of the access network and to give the market at least six months’ notice of the build-out of the fixed network. In Croatia, in a decision by the regulatory authority on March 21, 2012, the regula- tion of Hrvatski Telekom and Iskon Internet was extended to include the retail market for broadband Internet access and the broadcast of television pro- grams, with ex-ante rate control. Montenegro’s regulatory authority is currently holding a national consultation to review the need to regulate retail markets for broadband (ADSL) and mobile communications. The decision on whether to extend regulation is expected at the end of October 2012. In Hungary, a legislative process to amend the telecommunications act has been pending since October 3, 2012, which could potentially have negative consequences for Magyar Telekom in relation to retail contracts, conditions and legal remedy

Interim consolidated financial statements 29 Interim consolidated financial statements. Consolidated statement of financial position. Assets Current assets Cash and cash equivalents Trade and other receivables Current recoverable income taxes Other financial assets Inventories Non-current assets and disposal groups held for sale Other assets Non-current assets Intangible assets Property, plant and equipment Investments accounted for using the equity method Other financial assets Deferred tax assets Other assets Total assets Liabilities and shareholders’ equity Current liabilities Financial liabilities Trade and other payables Income tax liabilities Other provisions Liabilities directly associated with non-current assets and disposal groups held for sale Other liabilities Non-current liabilities Financial liabilities Provisions for pensions and other employee benefits Other provisions Deferred tax liabilities Other liabilities Liabilities Shareholders’ equity Issued capital Treasury shares Capital reserves Retained earnings including carryforwards Total other comprehensive income Total other comprehensive income directly associated with non-current assets and disposal groups held for sale Net profit (loss) Issued capital and reserves attributable to owners of the parent Non-controlling interests Total liabilities and shareholders’ equity Sept. 30, 2012 millions of € Dec. 31, 2011 millions of € Change millions of € Change % Sept. 30, 2011 millions of € 15,065 2,529 6,669 65 2,259 1,129 835 1,579 93,169 42,116 37,521 6,656 2,154 4,407 315 108,234 23,658 10,367 5,678 472 2,645 99 4,397 54,317 35,248 7,820 1,896 5,434 3,919 77,975 30,259 11,063 (6) 11,057 51,506 (29,029) (1,838) – (6,048) 25,648 4,611 108,234 15,865 3,749 6,557 129 2,373 1,084 436 1,537 106,677 50,097 41,927 6,873 2,096 4,449 1,235 122,542 24,338 10,219 6,436 577 3,217 – 3,889 58,263 38,099 6,095 1,689 8,492 3,888 82,601 39,941 11,063 (6) 11,057 51,504 (25,498) (2,326) – 557 35,294 4,647 122,542 (800) (1,220) 112 (64) (114) 45 399 42 (13,508) (7,981) (4,406) (217) 58 (42) (920) (14,308) (680) 148 (758) (105) (572) 99 508 (3,946) (2,851) 1,725 207 (3,058) 31 (4,626) (9,682) 0 0 0 2 (3,531) 488 – (6,605) (9,646) (36) (14,308) (5.0) (32.5) 1.7 (49.6) (4.8) 4.2 91.5 2.7 (12.7) (15.9) (10.5) (3.2) 2.8 (0.9) (74.5) (11.7) (2.8) 1.4 (11.8) (18.2) (17.8) – 13.1 (6.8) (7.5) 28.3 12.3 (36.0) 0.8 (5.6) (24.2) 0.0 0.0 0.0 0.0 (13.8) 21.0 – n.a. (27.3) (0.8) (11.7) 50,086 2,130 4,649 119 2,276 779 38,846 1,287 74,527 28,337 33,780 6,665 2,267 3,184 294 124,613 34,585 11,959 4,226 280 2,548 11,644 3,928 49,338 37,816 6,431 1,719 814 2,558 83,923 40,690 11,063 (6) 11,057 51,506 (25,584) 7 (3,040) 1,897 35,843 4,847 124,613

Interim consolidated financial statements 31 Consolidated statement of comprehensive income. Profit (loss) Actuarial gains and losses on defined benefit pension plans Revaluation due to business combinations Exchange differences on translating foreign operations Recognition of other comprehensive income in income statement Change in other comprehensive income (not recognized in income statement) Available-for-sale financial assets Recognition of other comprehensive income in income statement Change in other comprehensive income (not recognized in income statement) Gains (losses) from hedging instruments Recognition of other comprehensive income in income statement Change in other comprehensive income (not recognized in income statement) Share of profit (loss) of investments accounted for using the equity method Other income and expense recognized directly in equity Income taxes relating to components of other comprehensive income Other comprehensive income Total comprehensive income Total comprehensive income attributable to Owners of the parent Non-controlling interests Q3 2012 millions of € (6,735) (499) 0 Q3 2011 millions of € 1,198 (285) 0 Change millions of € (7,933) (214) 0 Q1 – Q3 2012 millions of € (5,533) (1,583) 0 Q1 – Q3 2011 millions of € 2,212 42 0 Change millions of € (7,745) (1,625) 0 FY 2011 millions of € 670 177 0 0 (227) 0 3 (7) (43) 0 0 167 (606) (7,341) (7,480) 139 0 732 0 214 (64) (580) (11) 0 269 275 1,473 1,285 188 0 (959) 0 (211) 57 537 11 0 (102) (881) (8,814) (8,765) (49) 0 642 (227) 17 (51) (88) 0 0 534 (756) (6,289) (6,638) 349 0 (678) 0 224 36 (608) 12 0 139 (833) 1,379 972 407 0 1,320 (227) (207) (87) 520 (12) 0 395 77 (7,668) (7,610) (58) 0 10 0 242 200 (765) 0 0 102 (34) 636 425 211

Interim consolidated financial statements 33 Issued capital and reserves attributable to owners of the parent Total other comprehensive income Translation of foreign operations millions of € (2,843) (1) Revaluation surplus millions of € 37 (1) Available-for-sale financial assets millions of € (4) Hedging instruments millions of € 1,122 Other comprehensive income millions of € 0 Taxes millions of € (329) (647) (3,491) (2,778) 654 (2,124) (64) (28) (33) (33) 96 92 102 (75) 27 (562) 560 557 (139) 418 163 (166) (174) 48 (126) 0 0 0 Total Non-controlling interests Total shareholders’ equity millions of € 38,016 (133) 0 (3,011) 2 (3) 1,897 (925) 0 35,843 35,294 0 0 (3,010) 2 (6,048) (590) 0 25,648 millions of € 5,012 (77) (497) 2 315 92 4,847 4,647 (386) 1 515 (166) 4,611 millions of € 43,028 (210) 0 (3,508) 4 (3) 2,212 (833) 0 40,690 39,941 0 0 (3,396) 3 (5,533) (756) 0 30,259

Interim consolidated financial statements 35 Significant events and transactions. Accounting policies. In accordance with § 37x (3) of the Securities Trading Act (Wertpapierhandels- gesetz – WpHG), Deutsche Telekom AG’s quarterly financial report comprises interim consolidated financial statements and an interim management report for the Group. The interim consolidated financial statements were prepared in accordance with the International Financial Reporting Standards (IFRSs) applicable to interim financial reporting as adopted by the EU. The interim management report for the Group was prepared in accordance with the applicable provisions of the WpHG. In December 2010, the IASB issued the pronouncement “Deferred Tax: Re- covery of Underlying Assets – Amendments to IAS 12.” The pronouncement is effective for financial years beginning on or after January 1, 2012 and has not yet been endorsed by the European Union and as such has not yet been applied. The amendment would not have a material impact on the presentation of Deutsche Telekom’s results of operations, financial position or cash flows. For more detailed information on the aforementioned amendments, please refer to the “Summary of accounting policies” section in the notes to the consolidated financial statements in the 2011 Annual Report (2011 Annual Report, page 165 et seq.). Statement of compliance. The interim consolidated financial statements for the period ended Septem- ber 30, 2012 are in compliance with International Accounting Standard (IAS) 34. As permitted by IAS 34, it has been decided to publish a condensed version compared to the consolidated financial statements at December 31, 2011. All IFRSs applied by Deutsche Telekom have been adopted by the European Commission for use within the EU. In the opinion of the Board of Management, the reviewed quarterly financial report includes all standard adjustments to be applied on an ongoing basis that are required to give a true and fair view of the results of operations, financial po- sition and cash flows of the Group. Please refer to the notes to the consolidated financial statements as of December 31, 2011 for the accounting policies applied for the Group’s financial reporting (2011 Annual Report, page 165 et seq.). The United States operating segment (T-Mobile USA) has no longer been classified as a discontinued operation since December 20, 2011. The prior-year figures disclosed in the consolidated income statement have therefore been adjusted with retroactive effect. Since January 1, 2012, Deutsche Telekom has pooled the tasks and functions of the Digital Services growth business as well as the Internet service provider STRATO, which as of December 31, 2011 were still largely part of the Germany operating segment, as the Digital Business Unit (DBU) under Group Head- quarters & Shared Services. As of July 1, 2012, Deutsche Telekom reorganized the Group’s IT infrastructure and pooled all internal IT units from the Germany and Systems Solutions oper- ating segments as well as Group Headquarters & Shared Services into the new Telekom IT unit within the Systems Solutions operating segment. Initial application of standards, interpretations and amendments to stan- dards and interpretations in the reporting period relevant for the 2012 financial year. In October 2010, the IASB issued the pronouncement “Disclosures – Transfers of Financial Assets” as an amendment to IFRS 7 “Financial Instruments: Disclosures.” The amendments are applicable for financial years beginning on or after July 1, 2011. The European Union endorsed this pronouncement in November 2011. The amendments do not have an impact on the presentation of Deutsche Telekom’s results of operations, financial position or cash flows in the interim consolidated financial statements. Changes in the composition of the Group. No major changes in the composition of the Deutsche Telekom Group occurred as of September 30, 2012. Selected notes to the consolidated statement of financial position. Non-current assets and disposal groups held for sale as well as directly associated liabilities. Non-current assets and disposal groups held for sale increased by EUR 0.4 billion against December 31, 2011. On September 28, 2012, T-Mobile USA concluded a framework agreement with Crown Castle International Corp., Houston/United States, concerning the leasing and use of cell sites. Approximately 6,400 cell sites will be transferred to an operating company, which will be deconsolidated as of the date of the closing of the transaction. The sole right to continue to use and lease out these sites for an average period of 28 years will be transferred to Crown Castle. Around 800 cell sites will be transferred to another operating company and then sold. In return, T-Mobile will receive a payment of approx. EUR 1.9 billion (USD 2.4 billion). T-Mobile USA will continue to operate its mobile communica- tions systems at these cell sites and, to this end, lease back the required infra- structure from Crown Castle through operating leases. Crown Castle will lease out any infrastructure not required by T-Mobile USA to third parties. The closing of the transaction is expected to be completed in the fourth quarter of 2012. As of September 30, 2012, the assets assigned to the cell sites totaling EUR 0.6 bil- lion are disclosed in the United States operating segment under non-current assets and disposal groups held for sale. Of this figure, EUR 0.5 billion relates to technical equipment and machinery and EUR 0.1 billion to land and buildings. Other operating income will be recognized upon closing of the transaction. In addition, mobile spectrum licenses in the United States operating segment amounting to EUR 0.1 billion are disclosed under non-current assets and disposal groups held for sale as of September 30, 2012. These licenses will be swapped with other companies. Once the transactions are concluded, the companies involved will be able to improve their mobile network coverage. This was contrasted by the sale of the shares in Telekom Srbija totaling EUR 0.4 billion on January 25, 2012. Following the sale, the amount of EUR 0.2 billion disclosed as total other comprehensive income as of December 31, 2011 due to the increase of carrying amounts to fair value was reclassified to other financial income/expense. Of this figure, EUR 0.1 billion was attributable to non-controlling interests.

Selected notes to the consolidated income statement. Other operating income. Income from reimbursements Income from the reversal of impairment losses on non- current financial assets in accordance with IFRS 5 Income from disposal of non-current assets Income from insurance compensation Income from divestitures Miscellaneous other operating income Q1 – Q3 2012 millions of € 309 Q1 – Q3 2011 millions of € 290 12 181 38 6 537 1,083 16 74 31 – 484 895 Income from disposal of non-current assets includes a book profit of around EUR 0.1 billion from a transaction consummated in September 2012 whereby T-Mobile USA and Verizon swapped AWS spectrum licenses. In addition to a large number of smaller individual items, miscellaneous other operating income includes income of around EUR 0.1 billion resulting from litigation with Kreditanstalt für Wiederaufbau concluded in the first quarter of 2012. Other operating expenses. Impairment losses recognized at T-Mobile USA in connection with the agreed business combination with MetroPCS Of which: on goodwill Of which: on intangible assets (excluding goodwill) Of which: on property, plant and equipment Losses on disposal of non-current assets Miscellaneous other operating expenses Q1 – Q3 2012 millions of € Q1 – Q3 2011 millions of € (2,605) (6,094) (1,890) (102) (463) (11,154) – – – (96) (525) (621) Miscellaneous other operating expenses include expenses of EUR 0.1 billion incurred in connection with existing financial factoring agreements and a large number of smaller individual items. Interim consolidated financial statements 37 Profit/loss from financial activities. The year-on-year improvement in the loss from financial activities by EUR 0.1 billion of 2012 related in part to the sale of shares in Telekom Srbija effective January 25, 2012. The conclusion of the transaction and the subse- quently necessary reclassification of the amounts recognized directly in equity in total other comprehensive income as of December 31, 2011 resulted in income of EUR 0.2 billion, which was recognized under other financial income/ expense. Of this figure, EUR 0.1 billion was attributable to non-controlling interests. Income taxes. In the first three quarters of 2012, a tax income of EUR 2.0 billion was recorded. This primarily relates to income from the reversal of deferred tax liabilities of EUR 3.2 billion which resulted from an impairment loss recognized on T-Mobile USA’s intangible assets and property, plant and equipment following the agreed business combination with MetroPCS and more than offset the tax expense on the otherwise positive profit before taxes. The impairment loss recognized on T-Mobile USA’s goodwill, by contrast, only had minor tax impact. Other disclosures. Depreciation, amortization and impairment losses. Depreciation, amortization and impairment losses increased by EUR 11.8 billion year-on-year to EUR 18.9 billion. This increase was primarily due to an impairment loss of EUR 10.6 billion recognized as of September 30, 2012 on goodwill, other intangible assets and property, plant and equipment of the United States cash-generating unit. The impairment loss generated a positive tax effect of EUR 3.2 billion. As a result of the agreement on the business combination of T-Mobile USA and MetroPCS, the fair value of the United States cash-generating unit had to be determined. The value of the shares in MetroPCS that will be attributable to Deutsche Telekom were used as a basis for valuation. Deutsche Telekom will receive these shares as a consideration for the contri bution of T-Mobile USA into MetroPCS. The fair value of T-Mobile USA was determined on the basis of the MetroPCS share price immediately prior to the announcement of the agreement. Since the carrying amount of the net assets of the United States cash-generating unit exceeded the fair value determined using this method, an impairment loss of EUR 7.4 billion (after taxes) had to be recognized in profit or loss to account for the difference. This impairment loss first resulted in the full write-down of the goodwill totaling EUR 2.6 billion. The remaining part was mainly attributable to mobile licenses (EUR 5.8 billion). For more information on the planned transaction to combine T-Mobile USA and MetroPCS, please refer to the section “Events after the reporting period” on page 41. In addition, EUR 1.1 billion of the increase was attributable to the classification of the United States operating segment as a discontinued operation in the prior year. As a result, no depreciation, amortization or impairment losses were recorded during the period in which it was classified as a discontinued operation. Cost of sales accounted for EUR 0.9 billion, selling expenses for EUR 0.1 billion and general and administrative expenses for EUR 0.1 billion of this effect.

Interim consolidated financial statements 39 A reconciliation for both changes in the disclosure of key performance indicators can be found in the section “Additional information” in the interim consolidated financial statements on page 46. For details on the development of operations in the operating segments and at Group Headquarters & Shared Services, please refer to the section “Develop- ment of business in the operating segments” (page 13 et seq.) in the interim Group management report. Segment information in the first three quarters. Q1 – Q3 2012 Q1 – Q3 2011 Germany Europe United States Systems Solutions Group Headquarters & Shared Services Total Reconciliation Group Net revenue millions of € 15,998 16,339 10,295 10,836 11,573 10,954 4,838 4,841 758 772 43,462 43,742 – – 43,462 43,742 Inter- segment revenue millions of € 1,007 1,057 518 516 5 9 2,349 2,418 1,418 1,447 5,297 5,447 (5,297) (5,447) – – Total revenue millions of € 17,005 17,396 10,813 11,352 11,578 10,963 7,187 7,259 2,176 2,219 48,759 49,189 (5,297) (5,447) 43,462 43,742 Profit (loss) from operations (EBIT) millions of € 3,454 3,494 1,529 1,381 (9,368) 2,245 (239) (228) (1,120) (1,269) (5,744) 5,623 (9) (4) (5,753) 5,619 Depreciation and amortization millions of € (3,283) (3,206) (2,122) (2,375) (1,840) (463) (463) (493) (530) (535) (8,238) (7,072) (3) 1 (8,241) (7,071) Impairment losses millions of € (3) (2) (8) (6) (10,602) – (1) – (79) (59) (10,693) (67) 1 – (10,692) (67) Segment assetsa millions of € 32,906 32,578 36,759 37,815 27,249 38,075 9,667 9,308 99,925 100,168 206,506 217,944 (98,272) (95,402) 108,234 122,542 Investments accounted for using the equity methoda millions of € 17 17 6,531 6,781 25 27 18 38 64 10 6,655 6,873 1 – 6,656 6,873 a Figures relate to the reporting dates of September 30, 2012 and December 31, 2011, respectively. Contingent liabilities. This section provides additional information and explains recent changes in the contingent liabilities as described in the consolidated financial statements for the 2011 financial year. Eutelsat arbitration proceedings. Eutelsat S.A. is seeking annulment by French courts of the decision rendered by the arbitral tribunal which refused to include Media Broadcast GmbH in the arbitration proceedings due to lack of jurisdiction. As part of the arbitration proceedings, Eutelsat S.A. submitted its statement of claim on February 29, 2012, to which Deutsche Telekom re- sponded on May 9, 2012. A hearing took place from September 17 to 19, 2012. The financial impact of the proceedings cannot be estimated with sufficient certainty at this point in time. Year-end bonus for civil servants. In a decision dated January 17, 2012, the Federal Constitutional Court ruled that the abolition of the year-end bonus for Deutsche Telekom civil servants is constitutional. This move does not violate the principle of equal pay laid down in Article 3 (1) of the Basic Law in conjunc- tion with Article 33 (5) of the Basic Law. The Federal Administrative Court now has to rule on the current litigation on claims for payment of the difference between the payment under the Federal Act on Bonus Payments and the re- duced payment under the Deutsche Telekom Special Allowance Ordinance, taking the decision of the Federal Constitutional Court into account. Due to the decision of the Federal Constitutional Court dated January 17, 2012, Deutsche Telekom no longer discloses the contingent liabilities of around EUR 0.2 billion recognized in the 2011 Annual Report. Reduced pay tables. In a ruling on December 15, 2009, the Stuttgart Administrative Court decided in two court proceedings to present the question of whether § 78 of the Federal Civil Service Remuneration Act is constitutional to the Federal Constitutional Court for decision. Referring to the decision to abolish the year-end bonus, the Federal Constitutional Court has since sug- gested to the Stuttgart Administrative Court that the question submitted be withdrawn. The Stuttgart Administrative Court has since withdrawn the question to the Federal Constitutional Court. Some complainants have with- drawn their lawsuits; others have been rejected by the court. We consider it unlikely that recourse will be taken to the courts in the cases still pending. As a result, Deutsche Telekom no longer discloses the contingent liabilities reported in the 2011 Annual Report of around EUR 0.1 billion. Claim for damages by Kabel Deutschland GmbH. Telekom Deutschland GmbH was notified in early April 2012 that Kabel Deutschland Vertrieb und Service GmbH (KDG) had filed a claim with the Frankfurt Regional Court; the complaint was served on June 14, 2012. KDG demands a reduction in the annual charge for the rights to use cable duct capacities in the future, and the partial refund of payments made in the past in this connection. The financial impact of the proceedings cannot be estimated with sufficient certainty at this point in time.

Interim consolidated financial statements 41 The transaction is subject to approval by the U.S. Department of Justice (DOJ), the Federal Communications Commission (FCC) and the Committee on Foreign Investment in the United States (CFIUS). The approval of the MetroPCS share- holders is also required. Deutsche Telekom and MetroPCS expect to obtain all the necessary approvals in the first half of 2013. The agreed business combination offers an excellent basis for the future of the U.S. operations thanks to an improved mobile spectrum position and additional financial resources. Deutsche Telekom expects to leverage synergies from it with a net present value of USD 6 to 7 billion. Advantages arise from a wider selection of affordable products and services, improved network coverage and a clear-cut technology path to one common LTE network. The combined company will be able to provide mobile services for approximately 42.5 million customers in the United States. Issuance of euro bonds. Deutsche Telekom International Finance B.V. issued two euro bonds guaranteed by Deutsche Telekom AG. One bond with a volume of EUR 650 million was issued on October 24, 2012. This 12-year bond has a coupon of 2.75 percent. A further seven-year bond with a volume of EUR 500 million was issued on October 30, 2012 and has a coupon of 2.00 percent. Both bonds are shown under non-current financial liabilities as of the issuance date. OTE exit scheme. On November 7, 2012, OTE’s Board of Directors approved a voluntary exit scheme to be implemented in the fourth quarter of 2012. The key terms and conditions of the scheme will be communicated within the next few days. It is not currently possible to calculate the financial impact of this scheme on Deutsche Telekom. For further explanations on the proceedings by the Croatian competition authority against Hrvatski Telekom, please refer to the section “Risks and opportunities” (page 25 et seq.) and to the notes on contingent liabilities (pages 39 and 40). For explanations on Shareholder litigation, please refer to “Risks and opportunities” (page 25 et seq.) in this Interim Group Report. Changes in the composition of the Supervisory Board. Ulrich Hocker re- signed his seat on the Supervisory Board on May 24, 2012 with effect from the end of the shareholders’ meeting. The shareholders’ meeting elected Dagmar P. Kollmann to take his place effective May 24, 2012. Michael Löffler stepped down from the Supervisory Board on May 31, 2012. Klaus-Dieter Hanas was court-appointed as his successor with effect from June 1, 2012. Hans Martin Bury stepped down from the Supervisory Board with effect from midnight on October 31, 2012. Sari Baldauf was court-appointed as his successor with effect November 1, 2012 until the 2013 shareholders’ meeting. Ms. Baldauf will be proposed for election at the 2013 shareholders’ meeting. Events after the reporting period (September 30, 2012). Business combination of T-Mobile USA and MetroPCS. On October 3, 2012, Deutsche Telekom AG and MetroPCS Communications Inc., Dallas/United States (MetroPCS) concluded an agreement to combine their business activi- ties in the United States. As part of this transaction, Deutsche Telekom AG intends to contribute T-Mobile USA into the listed company MetroPCS and in return receive a 74-percent stake in the capital stock of the combined company through a capital increase. The remaining share of 26 percent will be held by the previous shareholders of MetroPCS, who will also receive a one-time cash payment of USD 1.5 billion from MetroPCS. The transaction triggered an impairment test, which as of September 30, 2012 resulted in an impairment loss on goodwill, other intangible assets and property, plant and equipment of T-Mobile USA of around EUR 7.4 billion in total (after taxes). For further information, please refer to “Depreciation, amortization and impairment losses” under “Other disclosures” in the interim consolidated financial statements (pages 37 and 38). Since the transaction is, in accounting terms, structured as a reverse acquisi- tion, the existing carrying amounts of the assets and liabilities of T-Mobile USA will be carried forward upon its closing (expected in the first half of 2013). The carrying amounts of the assets and liabilities of MetroPCS, by contrast, will be remeasured at fair value within the scope of the business combination. Upon closing, the combined company will be shown as a fully consolidated entity in the consolidated financial statements of Deutsche Telekom and its shares are expected to be traded on the New York Stock Exchange (NYSE). The com- pany’s head office will continue to be in Bellevue, Washington, and it will retain a presence in Dallas, Texas.

43 Based on our review, no matters have come to our attention that cause us to presume that the condensed consolidated interim financial statements have not been prepared, in all material respects, in accordance with the IFRSs applicable to interim financial reporting as adopted by the EU nor that the interim Group management report has not been prepared, in all material respects, in accordance with the provisions of the German Securities Trading Act applicable to interim group management reports. Frankfurt/Main, November 8, 2012 PricewaterhouseCoopers Aktiengesellschaft Wirtschaftsprüfungsgesellschaft Harald Kayser Wirtschaftsprüfer Thomas Tandetzki Wirtschaftsprüfer Review report. To Deutsche Telekom AG, Bonn. We have reviewed the condensed consolidated interim financial statements – comprising the statement of financial position, the income statement and statement of comprehensive income, the statement of changes in equity, the statement of cash flows, and selected explanatory notes – and the interim Group management report of Deutsche Telekom AG, Bonn, for the period from January 1 to September 30, 2012, which are part of the quarterly financial report pursuant to § 37x (3) of the German Securities Trading Act (Wertpapier- handelsgesetz – WpHG). The preparation of the condensed consolidated interim financial statements in accordance with the IFRSs applicable to the interim financial reporting as adopted by the EU and to the interim Group management report in accordance with the provisions of the German Securities Trading Act applicable to interim group management reports is the responsibility of the parent company’s board of management. Our res- ponsibility is to issue a review report on the condensed consolidated interim financial statements and on the interim Group management report based on our review. We conducted our review of the condensed consolidated interim financial statements and the interim Group management report in accordance with German generally accepted standards for the review of financial statements promulgated by the Institut der Wirtschaftsprüfer (Institute of Public Auditors in Germany) (IDW) and additionally observed the International Standards on Review Engagements, “Review of Interim Financial Information Performed by the Independent Auditor of the Entity” (ISRE 2410). Those standards require that we plan and perform the review so that we can preclude through critical evaluation, with moderate assurance, that the condensed consolidated interim financial statements have not been prepared, in all material respects, in accor- dance with the IFRSs applicable to interim financial reporting as adopted by the EU and that the interim Group management report has not been prepared, in all material respects, in accordance with the provisions of the German Securities Trading Act applicable to interim group management reports. A review is limited primarily to inquiries of company personnel and analytical procedures and therefore does not provide the assurance attainable in a financial statement audit. Since, in accordance with our engagement, we have not performed a financial statement audit, we cannot express an audit opinion.

Additional information 45 Gross and net debt. Deutsche Telekom considers net debt to be an important performance indicator for investors, analysts and rating agencies. Financial liabilities (current) Financial liabilities (non-current) Financial liabilities Accrued interest Other Gross debt Cash and cash equivalents Available-for-sale/held-for-trading financial assets Derivative financial assets Other financial assets Net debt Sept. 30, 2012 millions of € 10,367 35,248 45,615 (756) (668) 44,191 2,529 132 1,533 996 39,001 Dec. 31, 2011 millions of € 10,219 38,099 48,318 (966) (615) 46,737 3,749 402 1,533 932 40,121 Change millions of € 148 (2,851) (2,703) 210 (53) (2,546) (1,220) (270) – 64 (1,120) Change % 1.4 (7.5) (5.6) 21.7 (8.6) (5.4) (32.5) (67.2) – 6.9 (2.8) Sept. 30, 2011 millions of € 11,959 37,816 49,775 (780) (453) 48,542 2,130 94 1,296 1,654 43,368

Additional information 47 Glossary. For further definitions, please refer to the 2011 Annual Report and the glossary therein (page 258 et seq.). ADSL, ADSL2+. See DSL. AT&T transaction. For details on the AT&T transaction relating to T-Mobile USA and the effects of the termination of the agreement for the sale of T-Mobile USA to AT&T, please also refer to the 2011 Annual Report (in particular pages 76 and 182 - 183). Cash capex. Investments in property, plant and equipment, and intangible assets (excluding goodwill) as shown in the statement of cash flows. DSL/ADSL/VDSL. In Deutsche Telekom’s service portfolio as: – ADSL (Asymmetrical Digital Subscriber Line) for consumer retail lines. Technology used to transmit data at fast rates (up to 8 Mbit/s downstream, 16 kbit/s to 640 kbit/s upstream) via standard copper wire pairs in the local loop within a radius of approximately three kilometers. – ADSL2+: Successor product to ADSL that raises the maximum data rate to 16 Mbit/s (downstream) or 1 Mbit/s (upstream). – VDSL (Very High Speed Digital Subscriber Line): Transmission technology that allows very high bandwidths (up to 50 Mbit/s downstream, up to 10 Mbit/s upstream) on short copper access lines with a maximum length of 500 meters. Fixed-network lines. Lines in operation excluding internal use and public telecommunications, including IP-based lines. The totals reported in the interim Group management report were calculated on the basis of precise figures and rounded to millions or thousands. Percentages were calculated on the basis of the figures shown. Mobile customers. For the purposes of the interim Group management report, one mobile communications card corresponds to one customer. The totals were calculated on the basis of precise figures and rounded to millions or thousands. Percentages were calculated on the basis of the figures shown (see also SIM card). PTC transaction. For information on the agreement with the French company Vivendi, the Polish company Elektrim and Elektrim’s creditors regarding PTC and its impact, please refer to the 2010 Annual Report (in particular page 48) and the Interim Group Report for the period from January 1 to March 31, 2011 (in particular pages 7 and 64). Pure LRIC – Pure Long-Run Incremental Cost. A costing model for the fixed network and for mobile communications based on a long-run approach. Under this approach, the ideal size of operation (size of an efficient network) is defined for a set output volume (forecast demand) with short-term fixed costs being viewed as variable costs. According to this “Recommendation of the European Commission on the Regulatory Treatment of Fixed and Mobile Termination Rates in the EU” of May 7, 2009, regulated termination rates are based only to a minor extent on network costs. Service revenues. Service revenues are revenues generated by mobile communications customers from services (i.e., revenues from voice services – incoming and outgoing calls – and data services), plus roaming revenues, monthly charges and visitor revenues. SIM card – Subscriber Identification Module card. Chip card that is inserted into a cell phone to identify it in the mobile network. Deutsche Telekom counts its customers by the number of SIM cards activated and not churned. Customer totals also include the SIM cards with which machines can communicate auto- matically with one another (M2M cards). The churn rate is determined and reported based on the local markets of the respective countries. Utilization rate. Systems Integration: ratio of average number of hours billed to maximum possible hours billed per period. VDSL. See DSL. Visitor. Visitors are customers of international mobile communications network operators who use voice or data services in a mobile network operated by a company of the Deutsche Telekom Group. The call or the transmitted data is routed via the network of the national company in question and terminated in another mobile or fixed network in the same or another country, or in the national company’s own network.

Additional information 49 Financial calendar.* November 8, 2012 December 6 – 7, 2012 February 28, 2013 May 8, 2013 Publication of the Interim Group Report as of September 30, 2012 2012 Capital Market Day Publication of the 2012 Annual Report Publication of the Interim Group Report as of March 31, 2013 May 16, 2013 August 8, 2013 November 7, 2013 2013 Shareholders’ meeting Publication of the Interim Group Report as of June 30, 2013 Publication of the Interim Group Report as of September 30, 2013 * For more dates, an updated schedule, and information on webcasts, please go to www.telekom.com. Contacts. Deutsche Telekom AG Corporate Communications D-53262 Bonn Phone +49 (0) 228 1 81 - 49 49 +49 (0) 228 1 81 - 9 40 04 Fax This Interim Group Report can be downloaded from the Investor Relations site on the Internet at: www.telekom.com/investor-relations For further information on products of Deutsche Telekom AG: www.telekom.com Investor Relations, Bonn office Phone +49 (0) 228 1 81 - 8 88 80 Fax +49 (0) 228 1 81 - 8 88 99 investor.relations@telekom.de E-mail Investor Relations, New York office Phone +1 212 424 2959 Phone +1 877 DT SHARE (toll-free) Fax E-mail +1 212 424 2977 investor.relations@telekom.com The English version of the Interim Group Report for January 1 to September 30, 2012 is a translation of the German version of the Interim Group Report. The German version is legally binding. This Interim Group Report is a publication of Deutsche Telekom AG KNr. 642 200 230 (German) KNr. 642 200 231 (English) Printed on chlorine-free bleached paper using mineral oil-free inks. If your mobile phone has QR recognition software you can directly access our Investor Relations website by scanning this code.