Nokia E90 Communicator Unlocked Phone with 3.2 MP Camera, 3G, Wi-Fi, GPS, Media Player, and MicroSD Slot--U.S. Version with Warranty (Mocha) 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. Quad-band GSM cell phone compatible with 850/900/1800/1900 frequencies and International 3G compatibility via 2100 HSDPA plus EDGE capabilities Numeric keypad on front, opens to reveal widescreen LCD and full QWERTY keyboard; powerful Symbian S60 operating system 3.2-megapixel camera/camcorder; Bluetooth stero music; GPS with Nokia Maps; Wi-Fi connectivity (802.11b/g); MicroSD expansion Up to 5.8 hours of talk time, up to 336 hours (14 days) of standby time