Sony Ericsson K550i Unlocked Cell Phone with 2 MP Camera, MP3/Video Player, Memory Stick Micro Slot-International 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. Quad-band GSM cell phone compatible with 850/900/1800/1900 frequencies and GPRS/EDGE data capabilities 2-megapixel digital camera with 2.5x digital zoom; digital media player with FM radio Bluetooth stereo music streaming; Memory Stick Micro (M2) expansion; access to personal email and instant messaging Up to 7 hours of digital talk time and 350 hours of standby time