Luowan Discovery V5+(V5 Plus) Dual Core Android 4.2 Shockproof Dustproof Outdoor Unlocked Smartphone (Black) Ip67 Waterproof Dustproof Shockproof 5MP Back +0.3MP Front dual cameras Android 4.2 Operating System 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. 2G: GSM 850/900/1800/1900MHz and 3G: WCDMA 850/2100MHz