Samsung Galaxy Trend DUOS 2 S7572 4" Dual SIM Android Smartphone (GSM Factory Unlocked) - Dual Core 1.2GHz CPU, 4GB, 3MP Camera, 3G 900/2100 MHz - Black Quad Band 2G, 3G HSDPA 900/2100 MHz Dual SIM Support, Dual Core 1.2GHz CPU, 4 Inch TFT capacitive touchscreen 768MB RAM, 4GB ROM, microSD up to 32GB 3MP Rear Camera with autofocus, Geo-tagging, touch focus 1500 mAh Battery, Bluetooth, GPS, WiFi, Android 4.1.2 Jelly Beam 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.