Samsung i8510 INNOV8 Unlocked Phone with 8 GB, 8 MP Camera, International 3G, GPS, Wi-Fi, and MicroSD Slot--International Version 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. 2.8-inch auto-rotating touchscreen; 8 GB internal memory; MicroSD memory expansion for additional 16 GB of memory 8-megapixel camera/camcorder; Wi-Fi networking; GPS for navigation and geotagging; Bluetooth stereo music; digital audio/video player Up to 8.5 hours of talk time, up to 300 hours (12.5 days) of standby time Compatible with 850/900/1800/1900 frequencies and International 3G compatibility via 900/2100 UMTS/HSDPA plus GPRS/EDGE capabilities