Detailed features and specs for the Siemens CT56 for AT&T. Plus discussion forum and photos This dual-band GSM phone is similar to the C56, but is customized for, and exclusive to, Cingular.

Siemens introduced three new phones for ... with the addition of GSM 850 to support carriers such at AT&T Wireless and Cingular. Unlike last year, all of the new models are tri-band, providing ...