Sony Ericsson T290a Unlocked Cell Phone-U.S. Version with Warranty (Black) This unlocked cell phone is compatible with GSM carriers like AT&T and T-Mobile. Not all carrier features may be supported. It will not work with CDMA carriers like Verizon Wireless, Alltel and Sprint. Dual-band GSM 850/1900 cell phone with GPRS data capabilities Easy-to-use candybar phone for voice communication and SMS text/MMS picture messaging Integrated speakerphone for hands-free conversations Up to 12 hours of digital talk time and 300 hours (12.5 days) of standby