AT&T Shares No. 1 Rank In Columbia, SC

                    AT&T Shares No. 1 Rank In Columbia, SC

Independent research firm RootMetrics awards top spot to AT&T in Recent
wireless network performance test

PR Newswire

COLUMBIA, S.C., May 6, 2013

COLUMBIA, S.C., May 6, 2013 /PRNewswire/ -- AT&T* wireless customers in
Columbia, SC, are enjoying the network ranked highest for combined/overall
voice, data and text performance by an independent mobile research and testing
organization.

(Logo: http://photos.prnewswire.com/prnh/20120612/DA23287LOGO)

Seattle-based RootMetrics® today released a wireless network performance study
for Columbia, which names AT&T in a tie as the overall RootMetrics RootScore®
Award winner for its combination of call, text and mobile Internet
performance.

The RootMetrics award is based on analysis of more than 14,800 wireless test
calls, texts and mobile Internet transmissions conducted during March, 2013.

"AT&T is tied for the highest rank in Columbia for overall network
performance, according to our research conducted in March, 2013. We tested
call, data and text performance across all networks in the Columbia area,
including over 4G LTE networks. As a result, AT&T tied for the RootScore Award
for overall performance in the area," said Bill Moore, RootMetrics' President
and CEO.

AT&T launched 4G LTE** in Columbia in November, 2012, and it plans to expand
its 4G LTE network to cover 300 million people nationwide by year-end 2014.
Even as 4G LTE expands, customers can get 4G speeds outside of 4G LTE areas
with our 4G HSPA+ technology.

"Our customers have told us they've been amazed by the speeds and quality of
our 4G LTE network, and the latest RootMetrics test backs that up," said
Laurent Therivel, AT&T's VP/GM of Mobility and Consumer Markets in the
Carolinas. "There are more reasons than ever to choose AT&T. We invested
nearly $275 million in the Columbia wireless and wireline networks from 2010
through 2012, and we'll continue investing in order to give our customers the
best possible experience."

The testing period covering Columbia, SC, released on May 6, 2013, measured
14,840 call, data, and text tests of mobile service experience by RootMetrics.
The Report is proprietary to RootMetrics.

Performance rankings are derived using data sampling and analysis methods that
are subject to statistical variation. The results of the Report are not an
endorsement of AT&T by RootMetrics. Wireless network performance is subject to
a number of factors. Your experiences may vary. Visit www.rootmetrics.comfor
more details.

*AT&T products and services are provided or offered by subsidiaries and
affiliates of AT&T Inc. under the AT&T brand and not by AT&T Inc.

**4G speeds not available everywhere. Limited 4G LTE availability in select
markets. LTE is a trademark of ETSI. Learn more at att.com/network.

About AT&T
AT&T Inc. (NYSE:T) is a premier communications holding company and one of the
most honored companies in the world. Its subsidiaries and affiliates – AT&T
operating companies – are the providers of AT&T services in the United States
and internationally. With a powerful array of network resources that includes
the nation's largest 4G network, AT&T is a leading provider of wireless,
Wi-Fi, high speed Internet, voice and cloud-based services. A leader in mobile
Internet, AT&T also offers the best wireless coverage worldwide of any U.S.
carrier, offering the most wireless phones that work in the most countries.
It also offers advanced TV services under the AT&T U-verse^® and AT&T │DIRECTV
brands. The company's suite of IP-based business communications services is
one of the most advanced in the world.

Additional information about AT&T Inc. and the products and services provided
by AT&T subsidiaries and affiliates is available at http://www.att.com/aboutus
or follow our news on Twitter at @ATT, on Facebook at
http://www.facebook.com/att and YouTube at http://www.youtube.com/att.

© 2013 AT&T Intellectual Property. All rights reserved. 4G not available
everywhere. AT&T, the AT&T logo and all other marks contained herein are
trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All
other marks contained herein are the property of their respective owners.

SOURCE AT&T Inc.

Website: http://www.att.com
Contact: Josh Gelinas, AT&T, 704-206-9071, Josh.gelinas@att.com