Nokia XL Dual SIM Unlocked Smart Phone RM-1030 Dual Core 4GB White System: Nokia X software platform 1.0 Processor: 1 GHz / Dual Core / Qualcomm Snapdragon S4 Memory: Internal: 4 GB / RAM: 768 MB / Slot type: microSD / Max. slot capacity: 32 GB Display: 5.0" / IPS LCD / Resolution: 800 x 480 pixels / 187 ppi; Camera: 5 Mpixels / Flash: Yes Network: 3G: 900/2100 MHz (Compatible with T-mobile's network) / GSM: 850/900/1800/1900 MHz Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.