Samsung Galaxy Duos Trend S7562C Android Smartphone (GSM Factory Unlocked) - Dual SIM, 4" Screen, 3G 900/2100 MHz, 3MP Camera - Black Quad Band 2G, 3G HSDPA 900/2100 MHz 4" Touch Screen, 1GHz CPU, Android 4.1.2 Jelly Bean 512MB RAM, 4GB ROM, up to 32GB with SD card 3MP Primary Camera, No Face Camera / LED Flash 1500mAh Battery, Blue Tooth, GPS, WiFi, USB, Stereo FM Radio, MP3/MP4 Player 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.