HTC Touch Pro Unlocked Phone with 3.2 MP Camera, Windows Mobile 6.1, Wi-Fi, GPS, and MicroSD Slot-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. Quad-band GSM cell phone compatible with 850/900/1800/1900 frequencies and International 3G compatibility via 900/2100 UMTS/HSDPA plus GPRS/EDGE data capabilities Windows Mobile 6.1 with TouchFLO 3D interface responds perfectly to your finger gestures when scrolling through contacts, browsing the web, and launching media 3.2-megapixel camera/camcorder; MicroSD expansion up to 16 GB; Windows Media Mobile player; GPS receiver; Wi-Fi networking (802.11b/g); Bluetooth stereo music Up to 7 hours of talk time, up to 367 hours (15+ days) of standby time