Nokia E51 Unlocked Phone with 2 MP Camera, 3G, Wi-Fi, MP3/Video Player, and MicroSD Slot--U.S. Version with Warranty (Black Steel) 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 3G compatibility via 850/2100 HSDPA plus EDGE capabilities Stylish, business-oriented stainless steel phone with access to personal and corporate email, document viewing, push-to-talk capability (network dependent) Wi-Fi networking; 2-megapixel camera/camcorder; MicroSD expansion (up to 4 GB); Bluetooth stereo music Up to 4.4 hours of talk time and 312 hours of standby time