Company Builds New Cell Sites, Boosts Capacity to Deliver Superior 4G Experience in Washington, DC Press Release: AT&T Inc. – Wed, Aug 29, 2012 7:00 AM EDT WASHINGTON, Aug. 29, 2012 /PRNewswire/ -- AT&T* is driving investment and innovation across Washington, DC to deliver superior 4G service and the best possible mobile Internet experience. (Logo:http://photos.prnewswire.com/prnh/20120612/DA23287LOGO) In the first half of 2012, AT&T invested $41 million in its Washington, DC wireless and wired networks. Network upgrades include activation of new cell sites or towers to improve network coverage, deploying faster connections to enable 4G speeds and adding spectrum capacity to support additional traffic. First-half upgrade highlights include: Expansion of 4G LTE in the District of Columbia; Maryland suburbs of Montgomery County and Prince George's County; and Fairfax County in Virginia Rollout of a new, interactive tool www.att.com/dcnetwork to show Washington, DC area wireless users a bird's-eye view of the hyperlocal improvements made to the network in the past two years AT&T network upgrades in Washington, DC also include deployment of new Wi-Fi hot spots and backbone network connections. "AT&T is making an ongoing investment in our community," said Barbara Lang, president and CEO of the DC Chamber of Commerce, "and I applaud the company for its commitment to the District of Columbia. At the Chamber, we have long advocated for keeping DC at the forefront of technological development and building a robust infrastructure. A strong mobile internet network is a vital part of that effort, and will keep businesses and visitors to our great city better connected—helping to make DC a better place to work, live and play." "We're working to build a 4G network that's smarter and better to provide our customers with a superior mobile Internet experience," said J. Michael Schweder, president of AT&T Mid-Atlantic. "The ongoing investment we're making across Washington, DC is designed to increase 4G coverage, reliability and speed. We also continue to invest in technologies like Wi-Fi and DAS to help provide customers with the best connections when they want it, whatever they're doing." AT&T's innovation and investment has resulted in the nation's largest 4G network, covering 275 million people with ultra-fast speeds and a more consistent user experience. AT&T is the only U.S. service provider to deploy two compatible 4G technologies to deliver more speed to more customers. Our 4G networks delivered faster speeds than any of our competitors in PCWorld'smost recent 13-market speed tests. AT&T's 4G LTE network delivers speeds up to 10 times faster than 3G**, as well as multiple innovations that optimize the network for performance. Our network's radio components are placed close to the antenna at most cell sites, instead of inside the base station, which helps minimize power loss between the base station and antenna and, in turn, improves the performance of our LTE network. The network also is designed with its core elements distributed across the country, which helps reduce latency, or the delay when using the Internet, because your request isn't traveling as far. Even as AT&T continues to expand its LTE coverage in 2012 and 2013, customers can get 4G speeds outside of LTE areas on our 4G HSPA+ network, unlike competitor's, where customers fall back to slower 3G technologies outside of LTE. And only AT&T's 4G network lets iPhone 4S download three times faster. AT&T's focus to deliver the best possible mobile Internet experience goes beyond 4G to embrace additional connection technologies. AT&T operates the nation's largest Wi-Fi network*** including more than 30,000 AT&T Wi-Fi Hot Spots at popular restaurants, hotels, bookstores and retailers across the country. 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 also is a leading developer of Distributed Antenna System (DAS) networks, which utilize multiple small antennas to maximize coverage and speed within stadiums, convention centers, office buildings, hotels and other areas where traditional coverage methods are challenging. Over the past five years, AT&T invested more than $115 billion into operations and into acquiring spectrum and other assets that have enhanced our wireless and wired networks. Since 2007, AT&T has invested more capital into the U.S. economy than any other public company. In a July 2012 report, the Progressive Policy Institute ranked AT&T No. 1 on its list of U.S. "Investment Heroes." Visitors to our local network site, http://att.com/DCNetwork, get a peek into AT&T's wireless network enhancements made since January 2011. Enhancements include new cell sites, Internet speed upgrades, capacity upgrades and network connection upgrades. *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. **Limited 4G LTE availability in select markets. Deployment ongoing. 4G LTE device and data plan required. Up to 10x claim compares 4G LTE download speeds to industry average 3G download speeds. LTE is a trademark of ETSI. Learn more about 4G LTE at att.com/network. *** 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. 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 atwww.att.com/rss. Or follow our news on Twitter at @ATT. © 2012 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 news release contains financial estimates and other forward-looking statements that are subject to risks and uncertainties, and actual results may 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 or revise statements contained in this news release based on new information or otherwise.