T-Mobile claims to have fastest data performance in top 100 U.S. markets

T-Mobile Offers Fastest Wireless Data Performance in Top 100 Markets

BELLEVUE, Wash. — December 20, 2010 — T-Mobile now delivers the fastest wireless data performance in the top 100 U.S. markets according to results of a new, independent third-party study.1 In the study, T-Mobile’s overall network outperformed all other nationwide networks tested.

“2010 was a banner year for T-Mobile’s network expansion,” said Neville Ray, Chief Technology Officer for T-Mobile USA. “We have deployed fiber backhaul to our cell sites to deliver an industry leading mobile data experience on the latest T-Mobile smartphones and broadband devices. Today, we are delivering the fastest data performance in the top 100 U.S. markets on average, and it’s only going to get faster as we upgrade our network to offer 42Mbps capability in 2011.”

The study results are based on national drive testing conducted between June 2010 and November 2010 by a leading third-party research firm, which downloaded and uploaded files to test data transfer speeds on laptop data sticks for each of the major carriers.

T-Mobile also offers a broad range of 4G products, including handsets, laptop sticks and a 4G-enabled netbook, which enables its customers to reap the benefits of the 4G network. T-Mobile will continue to be at the forefront of wireless innovation, delivering 4G products across a variety of categories in 2011.

4G network coverage is not yet available everywhere. For more information about T-Mobile’s 4G services, see http://www.t-mobile.com/coverage.

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1 Based on independent, third-party drive test data for Top 100 U.S. Markets(on a population-weighted basis) driven between June 2010 and November 2010.

About T-Mobile USA, Inc.

Based in Bellevue, Wash., T-Mobile USA, Inc. is the U.S. wireless operation of Deutsche Telekom AG. By the end of the third quarter of 2010, approximately 130 million mobile customers were served by the mobile communication segments of the Deutsche Telekom group — 33.8 million by T-Mobile USA — all via a common technology platform based on GSM and UMTS, the world’s most widely-used digital wireless standards. Today, T-Mobile operates America’s largest 4G network, and is delivering a compelling 4G experience across a broad lineup of leading devices in more places than competing 4G services. 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.