AT&T Mobility is a subsidiary of AT&T Inc (American Telephone and Telegraph). It is the second largest mobile telecommunications carrier in the United States, Verizon Wireless being the biggest. AT&T Mobility was formerly know as Cingular Wireless until 2006.

Headquarters: DeKalb, Georgia, USA

Type of  wireless networks and frequencies AT&T operates on:

• GSM GPRS EDGE 2G – 850 MHz
• GSM GPRS EDGE 2G – 1900 MHz
• UMTS HSPA 3G – 850 MHz
• UMTS HSPA 3G – 1900 MHz

Subscribers: 98.6 Million

Website: wireless.att.com

Mobile equipment brands marketed by AT&T Mobility:

• Blackberry
• Apple iPhone
• Sony Ericsson
• Samsung
• HTC
• Pantech
• Nokia
• Motorola
• LG

Countries around the world where the AT&T Mobility brand is present:

• United States (all 50 states including Alaska, Hawaii and the District of Columbia)
• Puerto Rico
• U.S. Virgin Islands