Palm Treo 750 Unlocked Phone with 3G, MP3/Video Player, and MiniSD 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 UMTS/HSDPA plus GPRS/EDGE data capabilities Palm smartphone powered by Windows Mobile 5.0 with full QWERTY keyboard for easy emailing and document editing 1.3-megapixel camera/camcorder; Bluetooth for handsfree devices; MiniSD memory expansion; access to personal and corporate email; Up to 4.5 hours of talk time, up to 240 hours (10 days) of standby time