Ameritech Cellular

Ameritech Mobile Communications, LLC was the first company in the United States to provide cellular mobile phone service to the general public. Cell service became publicly available in Chicago on October 13, 1983. The company was a division of Ameritech which, as of January 1, 1984, was the holding company of Illinois Bell, Michigan Bell, Wisconsin Bell, Ohio Bell, and Indiana Bell, which provides landline service to the Great Lakes region. From around 1986, Cincinnati Bell held a 45% stake in the company.[1] Originally named Ameritech Mobile Communications, it later became known as Ameritech Cellular.

Before the SBC Merger Ameritech sold some of its interests to GTE dba Verizon. Following the SBC Communications merger, Ameritech's wireless network was integrated and added to SBC's Wireless network. Originally Ameritech used CDMA as its network technology choice, but then converted to TDMA to be compatible with SBC's other wireless networks that were mostly using TDMA. During the SBC Communications merger its First and Original network in Chicago was sold to GTE (which later became Verizon Wireless).

Ameritech Mobile Communications exists today as Ameritech Mobile Communications, LLC d/b/a AT&T Mobility.

The Guinness Records claims "the Most durable mobile phone number (cellular phone number) David Contorno, of Lemont, Illinois, has owned and used the same mobile telephone number since 2 August 1985. His first mobile phone was an Ameritech AC140 and his carrier has been Ameritech Mobile Communications ever since."[2]

Ameritech Mobile Communications, LLC
Holding of AT&T Mobility
IndustryWireless Services
HeadquartersChicago, IL
ParentAmeritech (1984-1999)
SBC (1999-2000)
AT&T Mobility (2000-present)


  1. ^ Boyer, Mike (February 4, 1998). "Cincinnati Bell adding wireless". The Cincinnati Enquirer. Gannett Company. Retrieved March 29, 2015. Cincinnati Bell Inc. now owns 45 percent of Ameritech Cellular, which has sold cellular telephone service in Cincinnati, Dayton and Columbus for about 12 years. ... Cincinnati Bell and Ameritech have been waging a legal battle over Ameritech Cellular in Delaware courts for several years.
  2. ^

AT&T Teleholdings, Inc., formerly known as Ameritech Corporation (and before that American Information Technologies Corporation), is an American telecommunications company that arose out of the 1984 AT&T divestiture. Ameritech was one of the seven Regional Bell Operating Companies that was created following the breakup of the Bell System. Ameritech was acquired by SBC Communications in 1999 which subsequently acquired AT&T Corporation in 2006, becoming the present-day AT&T Inc.

Cincinnati Bell

Cincinnati Bell is the dominant telephone company for Cincinnati, Ohio, its nearby suburbs, and the Dayton metropolitan area in the U.S. states of Ohio, Indiana and Kentucky. Through the holdings of its parent company Cincinnati Bell Inc. it is also the dominant provider for the State of Hawaii. Its incumbent local exchange carrier subsidiary uses the name Cincinnati Bell Telephone Company LLC. Other subsidiaries handle services such as IT Solutions and long distance calling.

CyberTel Cellular

CyberTel Cellular was an early St. Louis-based cellular telecommunications company. CyberTel's first cellular tower in St. Louis became operational on July 16, 1984.

The cellular phone that was in use at that time was the Motorola DynaTAC 8000X, costing $3,995.

In October 1988, CyberTel, which offered paging services under the name BeepCall, acquired Minnesota Communications Corporation to effectively double its paging services, according to David Bayer, president, and owner of CyberTel.

CyberTel was acquired by Ameritech in 1991 for $512 million, which operated the company under the name CyberTel Cellular and Paging until the fall of 1994, when the name was finally changed to Ameritech Cellular.

John E. Rooney (businessman)

John E. "Jack" Rooney (1942 - July 22, 2011) was an American businessman and the president and chief executive officer of U.S. Cellular.

SBC Long Distance

SBC Long Distance LLC is a long distance telephone company owned by AT&T that does business as AT&T Long Distance. SBC Long Distance competes with other long distance providers who provide service within some of the Bell Operating Company service boundaries of AT&T. SBC Long Distance is a separate subsidiary than AT&T Communications, the incumbent long distance carrier for most of the country acquired in the SBC merger with AT&T.

SBC Long Distance started in 1996 as Southwestern Bell Communications Services, Inc., created as a result of the Telecommunications Act of 1996 which allowed the Baby Bells to compete for telephone service. In 2002, SWB Long Distance was renamed SBC Long Distance, as part of SBC's brand unification among its companies. In 2005, SBC purchased AT&T, and changed its name to AT&T. On April 1, 2006, SBC Long Distance began doing business as AT&T Long Distance.

SBC Long Distance provides competitive long distance service within the Bell Operating Company regions of Illinois Bell, Indiana Bell, Michigan Bell, Nevada Bell, Ohio Bell, Pacific Bell, Southwestern Bell, and Wisconsin Bell. SBC Long Distance does not provide service for BellSouth Telecommunications customers, who are served by BellSouth Long Distance, nor does it provide service to SNET customers, who are served by SNET America.

SBC did not maintain an actual long distance network and instead relies on a smaller telecommunications company, Level 3 Communications, to provide service. SBC initially created the agreement with Level 3 Communications predecessor company Williams Communication in 1999 and soon begin to provide long distance service to SBC’s wireless subsidiary Cellular One/SBC Wireless and Ameritech Cellular, until SBC long Distance became fully developed.

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