Huawei Ascend Y330 Black GSM Unlocked Android Phone Network: GSM 850/900/1800/1900MHz 3G HSDPA 850/1900MHz Platform: MTK 6572Dual Core 1.2GHZ / 512MB RAM / 4GB eMMC ROM Display: 4.0 inch LCD, WVGA(480 x 800), 16M colors, Auto rotate (G-sensor) Camera: 3.0 Mega pixel FF, video recording/video playback Operating System: Android 4.2 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.