HP iPAQ 910 Business Messenger Unlocked Phone with U.S. 3G, 3 MP Camera, Media Player, and MicroSD Slot-U.S. Version with Warranty 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 US 3G compatibility via 850/1900/2100 HSDPA plus EDGE capabilities Business-oriented smartphone with Windows Mobile 6; GPS receiver and Google Maps application; Wi-Fi networking (802.11b/g) 3-megapixel camera/camcorder; Bluetooth 2.0 connectivity for handsfree communication; MP3 player syncs with Windows Media Player 1940 mAh lithium-ion battery for extra-long talk and standby times; backed by 1-year warranty