Samsung X496 Unlocked Cell Phone--U.S. Version with Warranty (Silver) 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. Tri-band GSM cell phone compatible with 900/1800/1900 frequencies and GPRS capabilities Supports text, picture, sound, and instant messaging Phonebook with 500 contacts Up to 2.5 hours of talk time and 200 hours of standby