The story
BellSouth Mobility was a mobile phone network operated by the American landline telephone company BellSouth. It was founded in 1984 during the breakup of AT&T, which included dividing Advanced Mobile Phone Service, Inc. among the Baby Bells. It ran AMPS and D-AMPS across most of the territory covered by the BellSouth landline company. 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.
In 2004, following Cingular's acquisition of AT&T Wireless Services, BellSouth Mobility ceased to exist when it was legally merged into New Cingular Wireless PCS, LLC, the renamed former operating subsidiary of AT&T Wireless Services.
From Wikipedia’s article on BellSouth Mobility, shared under CC BY-SA 4.0.3