AT&T is the second largest provider of wireless services in the United States and also provides broadband services. AT&T is the third largest company in Texas.
As of May 2013, AT&T was the 21st largest company in the world by market value and the 13th largest non-oil company. As of 2014, it was also the 20th largest telecom company in the world, with over 110 million mobile-cellular customers.
AT&T’s roots stretch back to 1875, with founder Alexander Graham Bell’s invention of the telephone. During the 19th century, AT&T became the parent company of the Bell System, the American telephone monopoly. The Bell System provided what was, by all accounts, the best telephone service in the world.
AT&T’s current form took existence as Southwestern Bell Corporation, one of seven regional bell operating companies, created in 1983 after the break up of its parent company, American Telephone and Telegraph, which was founded in 1885 and was later know as AT&T Corp.
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.