Cingular Wireless is the name currently used by the wireless subsidary of AT&T;, AT&T; Mobility LLC. AT&T; Mobility is the largest mobile phone company in the United States and the second-largest in Puerto Rico with more than 61 million subscribers. The company has the largest digital voice and data network in the United States. Formerly a joint venture between AT&T; and BellSouth, the company has been wholly owned by AT&T; since December 2006 as a result of AT&T;’s acquisition of BellSouth.
The division is currently in the process of being rebranded to match its new parentage. Renaming on a corporate level occurred immediately, and consumer branding will change to “AT&T;,” or a variant thereof, by the end of 2007. Until all regulatory filings are approved, however, and public awareness is fostered, the “Cingular” brand will continue to be used in store signage and media advertisements during a dual-branded transition, expected to last several months. This process began January 15, 2007.
Among the services that AT&T; aggressively promotes is its “Rollover” service, allowing customers to keep unused minutes from month to month on a twelve-month rolling cycle on its popular “Nation” nationwide plans.