Comunicado de prensa Migration of MetroPCS Customers to Nationwide 4G HSPA+ and LTE Network Ahead of Schedule

Migration of MetroPCS Customers to Nationwide 4G HSPA+ and LTE Network Ahead of Schedule

First devices connecting to 4G HSPA+ and LTE network become available for MetroPCS customers, offering a consistently outstanding wireless experience

BELLEVUE, Wash. - June 14, 2013 - Just six weeks after completing the combination of T-Mobile USA and MetroPCS, T-Mobile US, Inc. (NYSE: TMUS) today announced the migration of MetroPCS customers onto its 4G HSPA+ and LTE network is ahead of planned schedule. This migration will provide customers of both brands deeper LTE deployment and faster network performance - delivering on the benefits of the combined company.

"The moment that NYSE bell rang on May 1, we put it into high gear and hit the gas," said John Legere, president and chief executive officer of T-Mobile US, Inc. "We've already begun moving MetroPCS customers to our blazing-fast network. The best part is as they upgrade their phones, their wireless experience immediately gets better."

The company is making HSPA+ and LTE compatible devices available to MetroPCS customers as well as allowing them to bring their own unlocked compatible HSPA+ or LTE phone, providing them the opportunity to upgrade to a powerful 4G network. With approximately 60 percent of MetroPCS customers upgrading their phones every year, it is expected that migration of customers will continue at a rapid pace. The company expects full customer migration to be complete by the end of 2015.

MetroPCS customers in Boston, Las Vegas and Hartford, Conn. can now purchase two new HSPA+ Android(TM)-powered cutting-edge smartphones running on a nationwide 4G network, the LG Optimus L9TM and Samsung Galaxy ExhibitTM. On June 17, MetroPCS will also make available a refreshed version of the Samsung Galaxy S® III, which will take advantage of 4G LTE in addition to a nationwide 4G HSPA+ network1.

Additionally, MetroPCS launched a "Bring Your Own Phone" program in these markets, as well as Dallas, giving customers the option to bring their own compatible unlocked phone to gain access to the 4G HSPA+ and LTE network.

Migrating MetroPCS customers will also benefit customers of T-Mobile. As customers leave the MetroPCS network, the freed up spectrum can then be added to the company's growing 4G LTE network. Deploying the company's spectrum on a single network provides a path to double its initial super-fast 4G LTE deployment (to 20+20 MHz of 4G LTE) in approximately 90 percent of the top 25 metro areas planned for 2014 and beyond.

Indeed, just two weeks after becoming one company, T-Mobile leveraged the compatibility of existing MetroPCS 4G LTE handsets and enabled them to connect to its 4G LTE network in Las Vegas. This allowed the company to combine MetroPCS' 4G LTE spectrum with T-Mobile's spectrum, doubling the LTE spectrum deployment in Las Vegas and dramatically increasing data speeds for both T-Mobile and MetroPCS customers with capable devices. As the company's 4G LTE network expands to more cities, T-Mobile will continue to migrate MetroPCS customers with 4G LTE-capable handsets and leverage MetroPCS' spectrum to deepen the combined company's LTE coverage.

Independent third party tests of the company's 4G LTE in Las Vegas conducted before and after the addition of MetroPCS spectrum show that its 4G LTE has the fastest average download speeds in the city, with an increase of nearly 50 percent.

1 Coverage not available everywhere. Se planea ampliación de la cobertura LTE para 2013. Capable device and qualifying service required for 4G HSPA+ and LTE. LTE es una marca comercial de ETSI.

Acerca de T-Mobile US, Inc.

Como proveedor con nueva modalidad de prestación de servicio, T-Mobile US, Inc. (NYSE: "TMUS") está redefiniendo la forma en que consumidores y empresas compran servicios móviles mediante la innovación los mejores productos y servicios. La avanzada red nacional 4G y 4G LTE de la compañía ofrece experiencias móviles increíbles para clientes que no desean hacer concesiones en cuanto a calidad y ventajas. Con sede en Bellevue, Wash., T-Mobile US opera sus marcas principales: T-Mobile y MetroPCS. Actualmente ofrece servicio a aproximadamente 43 millones de subscriptores móviles y ofrece productos y servicios a través de 70,000 puntos de distribución. Para obtener más información, visita: http://www.t-mobile.com.

Contactos:

Relaciones con los medios

425-378-4002

mediarelations@t-mobile.com

Contacto para relaciones con inversionistas

877-281-TMUS O 212-358-3210

investor.relations@t-mobile.com

Declaraciones a futuro

Este comunicado de prensa incluye "declaraciones a futuro" a los efectos de las leyes de valores federales de los EE. UU. Any statements made herein that are not statements of historical fact, including statements about T-Mobile US, Inc.'s expected network modernization and other advancements, expected migration of MetroPCS customers, expected product offerings, and projected synergies, are forward-looking statements. Generally, forward-looking statements may be identified by words such as "anticipate," "expect," "suggests," "plan," "believe," "intend," "estimates," "targets," "views," "may," "will," "forecast," and other similar expressions. Las declaraciones a futuro consideran únicamente el momento en el que se hacen, se basan en conjeturas y expectativas del momento, e implican ciertos riesgos e inseguridades. Important factors that could affect future results and cause those results to differ materially from those expressed in the forward-looking statements include, among others, the following: our ability to compete in the highly competitive U.S. wireless telecommunications industry; adverse conditions in the U.S. and international economies and markets; our ability to successfully integrate the MetroPCS and T-Mobile businesses and realize expected synergies and other benefits from the recent combination; our significant capital commitments and the capital expenditures required to effect our business plan; our ability to adapt to future changes in technology, enhance existing offerings, and introduce new offerings to address customers' changing demands; changes in legal and regulatory requirements, including any change or increase in restrictions on our ability to operate our network; our ability to successfully maintain and improve our network, and the possibility of incurring additional costs in doing so; major equipment failures; severe weather conditions or other force majeure events; disruptions of our key supply relationships; and other risks described in our filings with the Securities and Exchange Commission, including those described in our Current Report on Form 8-K filed with the Securities and Exchange Commission on May 8, 2013. No se debe confiar en exceso en estas declaraciones a futuro. No actualizaremos las declaraciones a futuro, ya sea como resultado de información nueva, eventos futuros u otro caso, a menos que así lo requiera la ley.

# # #

HUG#1709695