T-Mobile USA: T-Mobile and Major League Baseball Launch Fan-Chosen Awards Honoring Baseball's Biggest Game-Changing Moments

  T-Mobile USA: T-Mobile and Major League Baseball Launch Fan-Chosen Awards
              Honoring Baseball's Biggest Game-Changing Moments

Un-carrier Expands Major League Baseball (MLB) Partnership by Becoming Title
Sponsor of New Official MLB Award -'T-Mobile MLB Game Changer Award,'
Premieres New TV Campaign Featuring Two-Time All-Star Bryce Harper, Offers
Free Subscription to MLB.com At Bat App Exclusively to T-Mobile Customers

BELLEVUE, Wash. and NEW YORK - May 6, 2014 - Over the past year, T-Mobile US,
Inc. (NYSE: TMUS) has un-leashed Americans by rewriting the rules of wireless
- and they've responded by making T-Mobile America's fastest growing wireless
company. Today, America's Un-carrier announced it is teaming up with Major
League Baseball to take its people-power movement to America's pastime - with
the creation of a new fan-chosen MLB award- the T-Mobile MLB Game Changer
Award. This season, T-Mobile will also feature All-Stars Bryce Harper and
Andrew McCutchen in a national TV campaign, with a new commercial starring
Harper premiering nationally on ESPN's Wednesday Night Baseball.

"T-Mobile set out to fix a broken industry and forever change the game of
wireless - so game changers have a special place in my heart," said John
Legere, president and CEO of T-Mobile. "Which is why this award rocks. Because
it recognizes those with the grit and guts to step up and change the
trajectory of a game, a season or even baseball history."

"T-Mobile has been a tremendous partner for Major League Baseball, and we
applaud their efforts to change the game in wireless," said Tim Brosnan,
Executive Vice President, Business, Major League Baseball. "It's fitting that
T-Mobile, which prides itself on giving consumers freedom and choice, be the
driving force behind an award that empowers fans to choose the most
significant game-changing moments in baseball each day."

"Every time you take the field, you want to make that catch or get that hit
that changes the course of the game and locks up the win," said Andrew
McCutchen, center fielder for the Pittsburgh Pirates and one of T-Mobile's
player ambassadors for the 2014 season. "I think it's really cool that fans
decide this MLB award, and I'm really excited to try to make that
game-changing play that fans will want to vote for at the end of the day."

T-Mobile Game Changer Award
T-Mobile and MLB invite America's baseball faithful to call out the most
pivotal game-changing moments throughout the season - with the fans themselves
voting for the most significant game-changing moments, and culminating in
honors awarded at the close of the season.

T-Mobile MLB Game Changer will live on mlb.com/t-mobile. Each day, beginning
at 10:00am ET, fans themselves will be able to vote for one of two
game-changing moments - with the Daily Champion advancing to the next day to
face a new challenger. During the final week of the season, fans vote for one
of the top five Daily Champions. The winner of this fan vote will receive the
"T-Mobile MLB Game Changer of the Year" award, presented at the close of the
regular season.

Fans voting via Twitter or Facebook using the hashtag #Champion or #Challenger
will be entered for a chance to win prizes each week, ranging from game
tickets and MLB merchandise to T-Mobile devices and accessories.

T-Mobile MLB Sponsorships
T-Mobile also announced it has renewed its partnership with two-time All-Star
Bryce Harper, left fielder for the Washington Nationals and McCutchen, the
reigning National League Most Valuable Player. Harper is featured in
T-Mobile's new national TV ad campaign, premiering nationally on ESPN's
Wednesday Night Baseball. The campaign highlights the crazy restrictions of
old-guard wireless carriers - and what might happen if baseball had similarly
outrageous rules. See a sneak peek of the ad on T-Mobile's YouTube channel:
http://youtu.be/JyqZTAnO3-s.

For the 2014 season, T-Mobile will also continue its team sponsorships with
the Minnesota Twins, Pittsburgh Pirates, Seattle Mariners and Washington
Nationals. And, this year, it will also sponsor the Miami Marlins and the
Tampa Bay Rays. Team sponsorships will include player appearances, retail
promotions, T-Mobile Title Nights at the park and other fan activities.
T-Mobile also has a license agreement with Major League Baseball Players
Association.

After sponsoring the T-Mobile All-Star FanFest in 2013, T-Mobile returns as
title sponsor of this year's fan-focused event in Minneapolis July 11-15.
T-Mobile promises an even bigger and better event this year - with exclusive
experiences for T-Mobile customers and all fans of the game.

T-Mobile Customer Exclusive
In addition, T-Mobile announced that it is offering its customers free access
to the hugely popular MLB.com At Bat and its subscription features for the
2014 MLB season ($19.99 value). At Bat, the official app of MLB, offers
premium features such as live home and away radio broadcast feeds, the MLB.TV
Game of the Day and up-to-the-moment pitch tracking. Customers can download At
Bat through Google Play or the Apple App Store where it is available across
all supported Android & iOS smartphones and tablets.

At Bat®14: limited time offer. Data rates apply. Must be on T-Mobile's network
during initial download. Avail. to new At Bat®14 subscribers only.
Availability & pricing are subject to change. See T-Mobile.com for details.
MLB trademarks used with permission of applicable MLB entity. All rights
reserved. T-Mobile MLB Game Changer sweepstakes Official Rules including,
prizes & eligibility at mlb.com/t-mobile. Void where prohibited.

About T-Mobile US, Inc.:
As America's Un-carrier, T-Mobile US, Inc. (NYSE: "TMUS") is redefining the
way consumers and businesses buy wireless services through leading product and
service innovation. The Company's advanced nationwide 4G and 4G LTE network
delivers outstanding wireless experiences for customers who are unwilling to
compromise on quality and value. Based in Bellevue, Washington, T-Mobile US
provides services through its subsidiaries and operates its flagship brands,
T-Mobile and MetroPCS. It currently serves approximately 49.1 million wireless
customers and provides products and services through approximately 70,000
total points of distribution, including approximately 8,000 T-Mobile and
MetroPCS branded locations and 62,000 third-party and national retailer
locations, as well as distribution through our websites. For more information,
please visit www.t-mobile.com.

About Major League Baseball
Major League Baseball (MLB) is the oldest professional sports league in the
United States and consists of 30 member clubs in the U.S. and Canada,
representing the highest level of professional baseball. Under the guidance of
its ninth Commissioner, Allan H. (Bud) Selig, MLB has experienced dramatic
changes including Interleague Play, the introduction of the Wild Cards, the
new expanded Postseason format in 2012, the most comprehensive drug-testing
program in U.S. professional sports, an unprecedented era of labor peace,
significant revenue sharing among the clubs and growth in revenue from $1.2
billion in 1992 to more than $7.5 billion in 2012. The last nine years have
produced the nine best-attended individual seasons in MLB history, including
nearly 75 million in 2012, the fifth-highest ever. With the continued success
of MLB Network, MLB Advanced Media and the MLB Fan Cave, MLB continues to find
innovative ways for its fans to enjoy the National Pastime. For more
information on Major League Baseball, visit www.MLB.com.

About MLB Advanced Media
Established in June 2000 following a unanimous vote by the 30 Major League
Baseball club owners to centralize all of Baseball's Internet operations, MLB
Advanced Media LP (MLBAM) is the interactive media and Internet company of
Major League Baseball. MLBAM manages the official league site, www.MLB.com,
and each of the 30 individual Club sites to create the most comprehensive
Major League Baseball resource on the Internet. MLB.com offers fans the most
complete baseball information and interactivity on the web, including
up-to-date statistics, game previews and summaries, extensive historical
information, online ticket sales, baseball merchandise, authenticated
memorabilia and collectibles, fantasy games, live full-game video streaming
and in-progress and on-demand highlights, live and archived audio broadcasts
of every game, Gameday pitch-by-pitch application, around-the-clock hosted and
specialty video programming, complete blogging capabilities and the
award-winning suite of At Bat mobile applications. MLBAM powers more live
events on the Internet than any other website in the world.

About Major League Baseball Players Association
The Major League Baseball Players Association (www.MLBPLAYERS.com) is the
collective bargaining representative for all professional baseball players of
the thirty Major League Baseball teams and serves as the exclusive group
licensing agent for commercial and licensing activities involving active Major
League baseball players. On behalf of its members, it operates the Players
Choice licensing program and the Players Choice Awards, which benefit the
needy through the Major League Baseball Players Trust (www.PlayersTrust.org),
a charitable foundation established and run entirely by Major League baseball
players. Follow: @MLB_Players; @MLBPAClubhouse; @MLBPlayersTrust

Forward-Looking Statements
This news release includes "forward-looking statements" within the meaning of
the Private Securities Litigation Reform Act of 1995. The statements in this
news release regarding the business outlook, expected performance and
forward-looking guidance, as well as other statements that are not historical
facts, are forward looking statements. The words "estimate", "project",
"forecast", "intend", "expect", "believe", "target", "providing guidance" and
similar expressions are intended to identify forward looking statements.

Forward-looking statements are estimates and projections reflecting
management's judgment based on currently available information and involve a
number of risks and uncertainties that could cause actual results to differ
materially from those suggested by the forward-looking statements. With
respect to these forward-looking statements, management has made assumptions
regarding, among other things, customer and network usage, customer growth and
retention, pricing, operating costs, the timing of various events and the
economic and regulatory environment.

Media Contacts
T-Mobile US Media Relations
MediaRelations@T-Mobile.com

Investor Relations
877-281-TMUS OR 212-358-3210
investor.relations@t-mobile.com

Major League Baseball
Jeff Heckelman, (212) 931-7824
jeff.heckelman@mlb.com

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the content, accuracy and originality of the information contained therein.
Source: T-Mobile USA via Globenewswire
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