Luowan Discovery V8 Dustproof Shakeproof Smartphone Rugged Android 4.2.2 Phone Mtk6572w, Cortex A7 Dual Core, 1.3ghz (Orange) Android 4.2 MTK6572, 512MB RAM + 4GB ROM Waterproof Shockproof Dustproof Rear 5.0 MP Auto focus Zoom 4.0 Inch IPS QHD Screen Unlocked cell phones are compatible with GSM and WCDMA carriers such as AT&T and T-Mobile, but it are not compatible with CDMA carriers such as Verizon,MetroPCS and Sprint.