AT&T Mobility (Wireless)
42 Greenwich Avenue, 203.629.8008
www.wireless.att.com/cell-phone-service/welcome
The wireless subsidiary of AT&T Inc, with 80 million subscribers. It is the second-largest mobile phone company in the United States, behind Verizon Wireless. It provides GSM and UMTS voice communications.

Hours: weekdays 9am-7pm, Sat 10am-6pm, Sunday 11am-5pm.