The company provides broadband subscription televisionservices through Uverse Tv and DirecTV satellite television. Combined with AT&T's legacy U-verse service, this also makes AT&T the largest paid television operator. AT&T is the second-largest company in Texas, behind ExxonMobil. AT&T is the 11th largest company in the world. AT&T is the largest telecommunications company in the world by revenue. As of 2017, it is also the 21st-largest mobile telecom operator in the world, with 138.8 million mobile customers. AT&T was ranked at #4 on the 2017 rankings of the world's most valuable brands published by Brand Finance. Since 2012, AT&T has invested more in the United States than any other public company.
AT&T Inc. began its history as Southwestern Bell Telephone Company, which was a subsidiary of the Bell Telephone Company founded by Alexander Graham Bell in 1880. Bell Telephone Company evolved into American Telephone and Telegraph Company in 1885 which had since rebranded to AT&T Corporation. Following the 1982 United States v. AT&T antitrust lawsuit, this resulted in the divestiture of AT&T Corp.'s ("Ma Bell") subsidiaries or Regional Bell Operating Companies ("Baby Bells"), resulting in several independent companies including Southwestern Bell Corporation. Southwestern Bell changed its name to SBC Communications Inc. in 1995. In 2005, SBC purchased former parent AT&T Corporation and took on its branding, with the merged entity naming itself AT&T Inc. and using the iconic AT&T logo and stock-trading symbol. In 2006, AT&T Inc. acquired BellSouth, the last independent Baby Bell, making their formerly joint venture Cingular Wireless (which had acquired AT&T Wireless in 2004) wholly owned and rebranding it to AT&T Mobility.
The current AT&T Inc. reconstitutes much of the former Bell System and includes ten of the original 22 Bell Operating Companies, along with the original long distance division.