GSM Unlocked 5.5-inch 3G Speed DualSim Android Smart Cell Phone AT&T T-Mobile Straight Talk 5.5 HD Display takes your viewing experience to another level Build in APP play store allow you to down load thousands of apps, support Micro sd card up to 64GB to enlarge its storage High speed CPU, 3G , GPS , WIFI , Bluetooth Accessories: Phone,US wall charge adapter, usb cable, earbuds, (sim card and sd card not included) 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,Pure Talk USA and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin