Sony Ericsson XPERIA X1 Cell Phone with 3G, 3.2 MP Camera, Wi-Fi, GPS, Bluetooth, MicroSD Slot - International Version with No 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. Quad-band GSM cell phone compatible with 850/900/1800/1900 frequencies and International 3G compatibility via 900/1900/2100 UMTS/HSDPA plus GPRS/EDGE capabilities Mobile Web communication and multimedia entertainment with 3-inch touchscreen and slide-out QWERTY keyboard; Windows Mobile 6.1 operating system 3.2-megapixel camera/camcorder; Wi-Fi networking (802.11b/g); Bluetooth for handsfree devices and streaming music; assisted GPS; 400 MB internal memory expandable via MicroSD Up to 10 hours of talk time on GSM networks (6 hours on 3G networks), up to 500 hours (20 days) of standby time 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.