Utstarcom GSM708 Unlocked GSM Cell Phone - International Version with No 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. U.S. version tri-band GSM cell phone compatible with 850/1800/1900 frequencies and GPRS/EDGE capabilities Affordable unlocked phone for voice communication and text messaging; alarm; unit converter Stores up to 250 contact entires, eZi predictive text entry makes SMS messaging a breeze Up to 4.5 hours of talk time, up to 160 hours (6.7 days) of standby time