Oem Motorola

Cingular Wireless LLC is the largest United States mobile phone company, with headquarters in Atlanta, Georgia, United States. Cingular operates a network of multiple technologies. The most widely used of these technologies is called Global Systems for Mobile, or GSM. more...

On top of their GSM network they run a data network called GPRS (general packet radio service) and an upgrade for faster speeds called EDGE (enhanced data rates for global evolution). Cingular supports their legacy networks of TDMA and Analog. Former networks include various paging services and the Cingular Interactive division that became Velocita Wireless.

History

Cingular Wireless was formed in 2001 as a joint venture of SBC (now at&t) and Bellsouth. The joint venture created the nations second largest carrier. Cingular grew out of a conglomeration of 11 regional companies. these companies include BellSouth Mobility, BellSouth Mobility DCS, Cellular One, Houston Cellular, BellSouth Wireless Data, Southwestern Bell, Pacific Bell, Nevada Bell, Ameritech Cellular, SNET and SBC Wireless. With the exception of Pacific Bell and Bellsouth Mobility DCS, the digital network consisted of TDMA Technology. The Pacific Bell and Bellsouth Mobility DCS networks used GSM techonology on the PCS frequency (1900 Mhz). In 2002 Cingular began an initiative called "Project Genesis" which the code name for the GSM/GPRS overlay of the entire network. Project Genesis was completed by the end of 2004.

AT&T Wireless merger

After a bidding war with Britain's Vodefone PLC, Cingular announced in February, 2004 that they will purchase AT&T Wireless for 41 Billion dollars. The merger was completed on October 16, 2004. The combined company had a customer base of 46 million people which placed Cingular as the largest wireless provider in the United States

Universal Telephone Service UMTS high-speed network known as "BroadbandConnect", the first to utilize High-Speed Downlink Packet Access (HSPDA), to counter Verizon's EV-DO network. UMTS was launched on December 6, 2005 in Seattle, Portland, San Fransico, Salt Lake City, San Jose, San Deigo, Las Vegas, Phoenix, Austin, Houston, Dallas, Chicago, Boston, Baltimore and Washinton D.C. Cingular is expected to launch UMTS in all major metropolition areas by the end of 2006.

Read more at Wikipedia.org