AT&T Mobility

AT&TCingularCingular WirelessAT&T Wireless5G EvolutionAT&T MobilityAT&T (formerly Cingular)AT&T CingularAT&T Mobility, LLCAT&T Wireless 4G, GSM /HSDPA
AT&T Mobility LLC or AT&T U.S. Mobility, also known as AT&T Wireless, marketed as simply AT&T, is a wholly owned subsidiary of AT&T Inc. that provides wireless services to 162.3 million subscribers in the United States, including Puerto Rico and the U.S.wikipedia
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AT&T

AT&T Inc.Southwestern Bell CorporationAT&T Latin America
AT&T Mobility LLC or AT&T U.S. Mobility, also known as AT&T Wireless, marketed as simply AT&T, is a wholly owned subsidiary of AT&T Inc. that provides wireless services to 162.3 million subscribers in the United States, including Puerto Rico and the U.S. Virgin Islands.
In 2006, AT&T Inc. acquired BellSouth, the last independent Baby Bell company, making their formerly joint venture Cingular Wireless (which had acquired AT&T Wireless in 2004) wholly owned and rebranding it as AT&T Mobility.

BellSouth

Bell SouthBellSouth CorporationAT&T
Originally known as Cingular Wireless (a joint venture between SBC Communications and BellSouth) from 2000 to 2007, the company acquired the old AT&T Wireless in 2004; SBC later acquired the original AT&T and adopted its name.
The merger also consolidated ownership of Cingular Wireless and Yellowpages.com, both of which were joint ventures between BellSouth and AT&T.

AT&T Wireless Services

McCaw CellularAT&T WirelessAT&T
Originally known as Cingular Wireless (a joint venture between SBC Communications and BellSouth) from 2000 to 2007, the company acquired the old AT&T Wireless in 2004; SBC later acquired the original AT&T and adopted its name. In February 2004, after a bidding war with Britain's Vodafone Plc (at the time a part-owner of Verizon Wireless) Cingular announced that it would purchase its struggling competitor, AT&T Wireless Services, for $41 billion.
On October 26, 2004, AT&T Wireless was acquired by Cingular Wireless, a joint venture of SBC Communications and BellSouth, to form the largest wireless carrier in the United States at the time.

IPhone

iPhonesApple iPhoneiPhone app
The transition concluded in late June, just prior to the rollout of the Apple iPhone.
Apple created the device during a secretive collaboration with Cingular Wireless (which became AT&T Mobility) at the time—at an estimated development cost of US$150 million over thirty months.

Verizon Wireless

VerizonBell Atlantic MobileBoulder
AT&T Mobility is the largest wireless telecommunications provider in the United States and Puerto Rico ahead of Verizon Wireless and the largest wireless telecommunications provider in North America when including AT&T Mexico.
Regulators with the Federal Communications Commission approved the Bell Atlantic–GTE merger on June 16, 2000, creating the largest wireless company in the U.S. Verizon Wireless held this market position until Cingular acquired AT&T Wireless Services in 2004.

Ralph de la Vega

Ralph de la Vega, group president-Regional Telecom & Entertainment, was named as president and CEO of AT&T Mobility.
He has previously served as President & CEO of AT&T Mobile & Business Solutions; President and CEO of AT&T Mobility; COO of Cingular Wireless; President of BellSouth Latin America Operations; and the President of Broadband and Internet Services for BellSouth.

Dobson Cellular

Dobson CommunicationsDobson Communications SystemsRFB Cellular Inc.
In November 2007, AT&T acquired Dobson Communications, who owned Cellular One and was a roaming partner of AT&T, for $2.8 billion.
Dobson Cellular Systems, Inc. now part of AT&T Mobility, was a wireless telecommunications provider in several regions of the United States, including Alaska, Arizona, California, Kansas, Kentucky, Maryland, Michigan, Minnesota, Missouri, New York, Ohio, Oklahoma, Pennsylvania, Texas, Virginia, West Virginia and Wisconsin.

Pacific Bell Wireless

Pacific Bell Mobile Services
Pacific Bell Wireless, LLC is a wireless operating division of AT&T Mobility.

History of AT&T

SBC CommunicationsSBCAmerican Telephone and Telegraph Company
Originally known as Cingular Wireless (a joint venture between SBC Communications and BellSouth) from 2000 to 2007, the company acquired the old AT&T Wireless in 2004; SBC later acquired the original AT&T and adopted its name.
AT&T Broadband was subsequently acquired by Comcast in 2002, and AT&T Wireless merged with Cingular Wireless LLC in 2004.

AT&T Mexico

IusacellAT&TAT&T,
AT&T Mobility is the largest wireless telecommunications provider in the United States and Puerto Rico ahead of Verizon Wireless and the largest wireless telecommunications provider in North America when including AT&T Mexico.

Houston Cellular

SBC Wireless had previously operated in several northeast markets under the "Cellular One" brand, while BellSouth's wireless operations incorporated the former Houston Cellular.
Through a series of acquisitions and mergers, within 10 years, the company consisted of a two-way partnership between BellSouth and AT&T Wireless.

Edward Whitacre Jr.

Edward Whitacre, Jr.Ed WhitacreEdward Whitacre
On November 21, 2005, Ed Whitacre, then CEO of the newly merged SBC/AT&T, announced plans to market Cingular's service under the AT&T brand.
Whitacre led SBC through a series of mergers and acquisitions in building the largest provider of both local long distance telephone services and wireless service (through its Cingular division) in the United States.

Vodafone

Vodafone GroupVodafone Group plcVodafone Foundation
In February 2004, after a bidding war with Britain's Vodafone Plc (at the time a part-owner of Verizon Wireless) Cingular announced that it would purchase its struggling competitor, AT&T Wireless Services, for $41 billion.
In 2004, Vodafone made an unsuccessful bid for the entirety of AT&T Wireless, however, (Cingular Wireless) at the time a joint venture of SBC Communications and BellSouth (both now part of AT&T Inc.), ultimately outbid Vodafone and took control of AT&T Wireless (the combined wireless carrier is now AT&T Mobility).

UMTS

WCDMAW-CDMATD-SCDMA
Much of the AT&T network footprint now uses UMTS / HSPA+ Version 2 standard 3GPP+ wireless technologies (UMTS/HSPA) for simultaneous circuit switched voice and packet switched data communications.
While UMTS2100 is the most widely deployed UMTS band, some countries' UMTS operators use the 850 MHz (900 MHz in Europe) and/or 1900 MHz bands (independently, meaning uplink and downlink are within the same band), notably in the US by AT&T Mobility, New Zealand by Telecom New Zealand on the XT Mobile Network and in Australia by Telstra on the Next G network.

300-page iPhone bill

Teething problems with AT&T's billing process emerged soon after the iPhone's release, as early adopters started receiving exceptionally detailed monthly telephone bills with one of the most notable being the 300-page iPhone bill that was featured in an online video by blogger Justine Ezarik.
A 300-page iPhone bill from AT&T Mobility mailed in a box was the subject of a viral video made by YouTube personality Justine Ezarik, best known as iJustine, which became an Internet meme in August 2007.

Enhanced Data Rates for GSM Evolution

EDGEEGPRSGSM EDGE
Later, this network was upgraded to EDGE across the GSM footprint.
EDGE was deployed on GSM networks beginning in 2003 – initially by Cingular (now AT&T) in the United States.

Advanced Mobile Phone Service

Advanced Mobile Phone Service (AMPS)Advanced Mobile Phone Service, Inc.AMPS
Cingular's lineage can be traced back to Advanced Mobile Phone Service, which was a subsidiary of AT&T created in 1978 to provide cellular service nationwide.

BellSouth Mobility DCS

BellSouth Wireless
In 2000, it became part of the Cingular Wireless network, and the BellSouth branding was dropped.

Best Buy

BestBuyBest Buy CanadaBest Buy Co
In August 2008, Best Buy announced that it would begin selling the iPhone 3G for use on the AT&T network.
Best Buy sells cellular phones from Verizon Wireless, AT&T Mobility, Sprint Corporation in the United States.

Motorola Backflip

Backflip
On February 18, 2010, AT&T announced that on March 7, 2010 it would introduce its first smart phone based on Google's Android operating system, the Motorola Backflip.
The Motorola Backflip (also called the Motorola Motus in some regions) is a touchscreen smartphone released to the U.S. for the AT&T Mobility network on March 7, 2010, and for other countries on Telus and Optus networks.

Cellular One

Cellular One of North East ArizonaCellularOneOne Communications
In November 2007, AT&T acquired Dobson Communications, who owned Cellular One and was a roaming partner of AT&T, for $2.8 billion. SBC Wireless had previously operated in several northeast markets under the "Cellular One" brand, while BellSouth's wireless operations incorporated the former Houston Cellular.

BellSouth Mobility

BellSouthBellSouth CellularBellSouth Cellular Corp.
Some of the companies that comprised Cingular, such as BellSouth Mobility, ceased to exist when they were legally merged into the operating company subsidiary AT&T Wireless PCS, which was New Cingular Wireless PCS.
In 2000, it became part of the Cingular Wireless network, and the BellSouth branding was dropped; however, the company continued to exist as an operating subsidiary.

4G

4G LTE3G evolution4-G
In 2011, it was reported that AT&T would upgrade its network to HSPA+ category 21 throughout the year, which it would promote as offering 4G-grade speeds.
As of November 2012, the five publicly available LTE services in the United States are provided by MetroPCS, Verizon Wireless, AT&T Mobility, U.S. Cellular, Sprint, and T-Mobile US.

GSM

Global System for Mobile CommunicationsGSM networkGSM (850/900/1800/1900)
AT&T shut down its 2G GSM (850/1900 MHz) network on January 1, 2017.
The second mobile provider to shut down its GSM network (on January 1, 2017) was AT&T Mobility from the United States.

2G

2.5G2.75G2.5
AT&T shut down its 2G GSM (850/1900 MHz) network on January 1, 2017. 2G frequencies were discontinued as of January 1, 2017.