T-Mobile Continues to Boost Capacity for Customers with LTE-U Launching in Spring 2017

The Un-carrier continues to advance its network at breakneck speed
and is now rolling out next-gen LTE-U technology

BELLEVUE, Wash.–(BUSINESS WIRE)–#FCC–Building on its track-record of launching advanced technologies first,
T-Mobile (NASDAQ: TMUS) today announced the Un-carrier is now deploying
LTE-U technology in its LTE network, following today’s FCC certification
of equipment from strategic partners Ericsson and Nokia. This move paves
the way for the Un-carrier to introduce new network capabilities and
devices for consumers this spring.

With LTE-U, starting this spring, T-Mobile customers will be able to tap
into the first 20 MHz of underutilized unlicensed spectrum on the 5GHz
band and use it for additional LTE capacity. T-Mobile already has more
capacity per subscriber than AT&T and Verizon, and the addition of LTE-U
will only extend that lead and further improve the Un-carrier’s
blazing-fast speeds. And, LTE-U will make it possible for T-Mobile to
bring its forthcoming Gigabit LTE to more places across the country.

“T-Mobile’s network is second to none, with more capacity per customer
than the Duopoly … and LTE-U will only accelerate our lead,” said
Neville Ray, CTO at T-Mobile. “T-Mobile’s built a track record of
introducing new innovations first,
including deploying more LTE Advanced technologies than anyone in the
US. All that innovation means one thing – a fantastic customer
experience. That’s why T-Mobile customers are the most
satisfied in US wireless!”

Today’s FCC certification follows more than three years of extensive
research, development and testing to ensure LTE-U works well alongside
Wi-Fi technologies. Starting in December 2016, T-Mobile was already
testing LTE-U equipment as part of early field trials, so the Un-carrier
has been ready to hit the ground running to bring this new technology to
customers!

“We continue to push the boundaries of bringing new technologies in the
unlicensed arena. Nokia is committed to working alongside T-Mobile to
bring new solutions to market,” Ricky Corker, Nokia EVP and Head of
North America said. “We stand ready to enhance T-Mobile’s leadership
proposition and show what the future of mobile communications can be for
Un-carrier customers.”

LTE-U devices and equipment intelligently tap into and share
underutilized unlicensed spectrum without affecting other users on the
same band, including those using conventional Wi-Fi. LTE-U constantly
seeks the least utilized channels to maximize efficiency and performance
for everyone. As demand on the Wi-Fi network increases, LTE-U backs off,
and as Wi-Fi demand wanes, customers can tap into that unused capacity
for LTE.

“Ericsson welcomes the FCC’s approval of LTE-U. The use of this
technology will bring an even better customer experience while using
LTE,” said Glenn Laxdal, Head of Network Products, Ericsson North
America. “Ericsson has been working in close collaboration with our
partners to ensure that this technology will work in harmony with Wi-Fi,
utilizing unlicensed spectrum in an optimal way.”

T-Mobile’s LTE network is recognized as America’s fastest according to
multiple independent third-party studies (Speedtest.net, Twin
Prime, the FCC and OpenSignal)
These tests are also based on billions of real-time, crowd-sourced tests
by millions of real customers, not paid consultants, using their own
devices where they live, work and play.

Learn more about T-Mobile’s unrelenting work in delivering a bigger,
better network to its customers here.
Or, for more information on T-Mobile’s network, visit www.t-mobile.com/coverage.

About T-Mobile

As America’s Un-carrier, T-Mobile US, Inc. (NASDAQ: TMUS) is redefining
the way consumers and businesses buy wireless services through leading
product and service innovation. The Company’s advanced nationwide 4G LTE
network delivers outstanding wireless experiences to 71.5 million
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.
For more information, please visit http://www.t-mobile.com.

Contacts

Media Contacts
T-Mobile US Media Relations
MediaRelations@T-Mobile.com
or
Investor
Relations
877-281-TMUS OR 212-358-3210
investor.relations@t-mobile.com