Nokia N91 4 GB Unlocked Cell Phone with 2 MP Camera, International 3G, Wi-Fi, MP3/Video Player--International Version with Warranty (Silver) 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. Tri-band GSM cell phone compatible with 900/1800/1900 frequencies and International 3G compatibility via 2100 UMTS plus GPRS/EDGE capabilities 2-megapixel digital camera with Carl Zeiss autofocus lens 4 GB internal memory (not expandable); MP3/video player; Bluetooth for handsfree devices Up to 4 hours of digital talk time and 190 hours of standby This cell phone may not include a US warranty as some manufacturers do not honor warranties for international version phones. Please contact the seller for specific warranty information.