AT&T Expands Mobile Broadband Wireless Capacity Along Heavily Travelled I-65 and I-465 in Metro Indianapolis

INDIANAPOLIS, Sept. 28, 2011 /PRNewswire/ — Customers in densely populated and
heavily travelled sections of I-65 and I-465 in Indianapolis are expected to
experience improved mobile broadband and voice performance as a result of
continued investment and innovation by AT&T*. The company announced today that
it has completed a key initiative in its ongoing efforts to enhance the wireless
capacity and performance of its mobile broadband network throughout the area.

The network upgrades will boost capacity for local residents, businesses, and
travelers along I-65 in southern Marion County and nearby Highway 40; and I-465
on Indianapolis’ northwest side. Other areas close by which also benefit from
the improvements include W. 79th St., English Ave., and E. Raymond St.

The network enhancement adds new layers of frequency, also known as “carriers,”
to ten cell sites throughout the Indianapolis metro area to more efficiently
manage available spectrum and increase mobile broadband capacity. The expansion
helps manage ever-growing demand for mobile broadband services by allocating
more network resources for AT&T’s mobile broadband network.

This network improvement is part of AT&T’s plan to invest in the $20-billion
range in its national wireless and wireline networks in 2011. AT&T invested more
than $225 million in its wireless and wireline networks from 2008 to 2010 in the
greater Indianapolis area and nearly $925 million statewide. This month, AT&T
also announced upgrades to its wireless network in Avon, Danville, Pittsboro,
Plainfield, Sheridan, Westfield, and Zionsville; and in the Indianapolis airport
area.

“We’re committed to building out our urban networks, especially in densely
populated communities like Indianapolis, to help support the explosive industry
wide growth in smartphones and wireless data usage. Our goal is for our
customers to have an extraordinary experience,” said Brian Ducharme, vice
president and general manager, AT&T Indiana and Michigan. “Our recently
announced agreement to acquire T-Mobile USA will strengthen and expand our
network in Indianapolis. If approved, this deal means that we’ll be able to
expand the next generation of mobile broadband – 4G LTE – from our current plan
of 80 percent of the U.S. population to more than 97 percent.”

AT&T’s mobile broadband network is based on the 3rd Generation Partnership
Project (3GPP) family of technologies that includes GSM and UMTS, the most
widely used wireless network platforms in the world. AT&T has the best
international coverage of any U.S. wireless provider, providing access to voice
service in more than 220 countries and data service in more than 200 countries.

AT&T also operates the nation’s largest Wi-Fi network** with nearly 27,000
hotspots in the U.S. and provides access to nearly 190,000 hotspots globally
through roaming agreements. Most AT&T smartphone customers get access to our
entire national Wi-Fi network at no additional cost, and Wi-Fi usage doesn’t
count against customers’ monthly wireless data plans.

AT&T recently launched “Focus: Indianapolis,” which provides visitors a peek
into AT&T’s wireless network enhancements made since the beginning of the year.
Enhancements include new cell sites, broadband speed upgrades, capacity upgrades
and network connection upgrades. The site also provides a map of area AT&T
stores, a map of area Wi-Fi hotspots, useful tips, a localized Twitter handle
and device reviews. You can visit the site at http://focus.att.com/indy/.

For more information about AT&T’s coverage in Indiana or anywhere in the United
States, consumers can visit the AT&T Coverage Viewer.

For updates on the AT&T wireless network, please visit the AT&T network news
page.

*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.

** Largest based on company branded and operated hotspots. Access includes AT&T
Wi-Fi Basic. A Wi-Fi enabled device required. Other restrictions apply. See
www.attwifi.com for details and locations.

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 around the world. With a powerful array of network resources that includes
the nation’s fastest mobile broadband network, AT&T is a leading provider of
wireless, Wi-Fi, high speed Internet, voice and cloud-based services. A leader
in mobile broadband and emerging 4G capabilities, 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. In domestic markets, AT&T Advertising Solutions and AT&T Interactive are
known for their leadership in local search and advertising.

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. This AT&T
news release and other announcements are available at
http://www.att.com/newsroom and as part of an RSS feed at www.att.com/rss. Or
follow our news on Twitter at @ATT.

© 2011 AT&T Intellectual Property. All rights reserved. Mobile broadband not
available in all areas. 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.

Cautionary Language Concerning Forward-Looking Statements

Information set forth in this press release contains financial estimates and
other forward-looking statements that are subject to risks and uncertainties,
and actual results might differ materially. A discussion of factors that may
affect future results is contained in AT&T’s filings with the Securities and
Exchange Commission. AT&T disclaims any obligation to update and revise
statements contained in this news release based on new information or otherwise.

SOURCE AT&T Inc.