Samsung Galaxy Grand Duos i9082 Smartphone (Blue) - Factory Unlocked, 5" Screen, Dual Sim, Dual-core 1.2 GHz, Dual Cameras (8MP Rare), Wi-Fi and GPS Quad 2G, 3G HSDPA 900 / 1900 / 2100 MHz 5" Large Capacitive Touchscreen, Dual SIM Cards Dual-core 1.2 GHz Cortex-A9 CPU, 1 GB RAM, 8 GB ROM, up to 64 GB with MicroSD Card Dual Cameras with Flash (8MP Rare with Detection and Stabilization, 2MP Front) 2100 mAh Battery, up to 10 hrs Talk Time 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.