T-Mobile USA Jumps to Second Place Across Three Regions in J.D. Power and Associates’ 2011 Wireless Network Quality Performance Study

September 14, 2011

America’s Largest 4G Network Delivers a Compelling Wireless Experience Across 32 States in the Northeast, Southeast and West Regions

Bellevue, Wash. — Sep. 15, 2011

As T-Mobile USA, Inc. continues the rapid expansion of its 4G network, J.D. Power and Associates’ 2011 Wireless Network Quality Performance StudySM, Volume 2, shows that customers in the Northeast, Southeast and West regions are satisfied with an improved network experience, including call quality and messaging and data performance. In its study, which compares network performance among the largest U.S. wireless carriers, J.D. Power and Associates recently announced that T-Mobile earned the second highest ranking in these three regions covering 32 states, tied in the Northeast.

T-Mobile ranked second out of four in both the Southeast and West regions, and tied in the Northeast. The Northeast region covers the seven states of Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island and Vermont. The Southeast region covers nine states: Alabama, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina and Tennessee. The West region covers 16 states: Arizona, California, Colorado, Idaho, Iowa, Minnesota, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oregon, South Dakota, Utah, Washington and Wyoming.

“T-Mobile’s ongoing commitment to making reliable connections available to more Americans continues to pay off as shown by the results of this J.D. Power study,” said Neville Ray, Chief Technology Officer for T-Mobile USA. “In the past six months, we have continued to advance the performance of our 4G service while also driving improvements in call quality, reliability and the overall experience for our customers.”

The J.D. Power and Associates 2011 Wireless Network Quality Performance Study measures consumers’ wireless network experience, based on 10 criteria that impact a carrier`s performance. Wireless phone subscribers surveyed were asked about their experiences with dropped calls, static/interference, connection on first try, immediate voice mail notification, message transmission failures and mobile Web and e-mail connection errors. Call quality and data performance were examined in six regions: Northeast, Mid-Atlantic, Southeast, North Central, Southwest and West.

Results of the 2011 Wireless Network Quality Performance StudySM, Volume 2, are based on more than 22,000 Internet survey interviews conducted between January 2011 and June 2011. More information about J.D. Power and Associates studies can be found at http://www.jdpower.com.

Lindsay Morio

T-Mobile USA Media Relations



About T-Mobile USA, Inc.

Based in Bellevue, Wash., T-Mobile USA, Inc. is the U.S. wireless operation of Deutsche Telekom AG (OTCQX: DTEGY). By the end of the second quarter of 2011, approximately 128 million mobile customers were served by the mobile communication segments of the Deutsche Telekom group — 33.6 million by T-Mobile USA — all via a common technology platform based on GSM and UMTS and additionally HSPA+ 21/HSPA+ 42. T-Mobile USA’s innovative wireless products and services help empower people to connect to those who matter most. Multiple independent research studies continue to rank T-Mobile USA among the highest in numerous regions throughout the U.S. in wireless customer care and call quality. For more information, please visit http://www.T-Mobile.com. T-Mobile is a federally registered trademark of Deutsche Telekom AG. For further information on Deutsche Telekom, please visit www.telekom.de/investor-relations.