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Southwestern Bell logo, 1964–1969. On January 1, 1984, as part of the breakup of AT&T, Southwestern Bell Telephone became the namesake and leading subsidiary of the new Regional Bell Operating Company, Southwestern Bell Corporation.
Acquired by Verizon Wireless and AT&T Mobility. [38] AT&T Wireless Services: GSM: EDGE: 22: October 2004: Acquired by Cingular Wireless, which later rebranded to AT&T Mobility. [39] Big Sky Mobile: GSM: EDGE: Unknown: 2017: Sold spectrum licenses to AT&T and T-Mobile and exited the business. [40] Blaze Wireless: GSM, UMTS: EDGE, HSPA+, LTE ...
The telephone played a major communications role in American history from the 1876 publication of its first patent by Alexander Graham Bell onward. In the 20th century the American Telephone and Telegraph Company (AT&T) dominated the telecommunication market as the at times largest company in the world, until it was broken up and replaced by a system of competitors.
The National Bell Telephone Company merged with American Speaking Telephone Company on March 20, 1880, to form the American Bell Telephone Company, also of Boston, Massachusetts. [7] The American Bell Telephone Company evolved into the American Telephone and Telegraph Company (AT&T), one of the largest telecommunications companies in the world.
Hawaiian Telcom was founded in 1883 [5] as the Mutual Telephone Company, chartered under the Kingdom of Hawaii. Herman A. Widemann was a co-founder and the President. [6] [7] [8] The original owner was Archibald Scott Cleghorn, father of Princess Ka'iulani. [1]
The Ohio Bell Telephone Company, now doing business as AT&T Ohio, is the Bell Operating Company serving most of Ohio and parts of West Virginia. It is a wholly owned subsidiary of AT&T . Its headquarters is the Ohio Bell Building at 750 Huron Road, Cleveland , Ohio , and formerly had a secondary headquarters at 150 East Gay Street, Columbus ...
Michigan Bell is the subsidiary of AT&T serving the state of Michigan. Following the Bell System divestiture on January 8, 1984, the company became a subsidiary of Ameritech, the Regional Bell operating company that served the midwestern United States. Ameritech was subsequently acquired by SBC Communications, which later changed its name to AT&T.
Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the three major cellular carriers in the countryv—AT&T Mobility, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.
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