Nokia N81 8 GB Smartphone - Cocoa Brown (Unlocked) 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 2100 UMTS plus GPRS/EDGE capabilities 8 GB of internal memory (not expandable); 2-megapixel camera/camcorder; digital audio player; FM radio Wi-Fi networking (802.11b/g); Bluetooth stereo music; access to personal email; Symbian S60 operating system Up to 4 hours of digital talk time and 17 days of standby time