Kata F1s - 4.5" IPS qHD Quad Core 1.3GHz MTK6582 Unlocked Smartphone Android 4.4 (KitKat) 1GB RAM Dual SIM 3G WiFi 8GB Memory 8MP Back Camera 5MP Front Camera (White) GSM Quadband 850/900/1800/1900, 3G WCDMA 850/1900/2100, Android OS, v4.4 (KitKat) 4.5" qHD Display: QHD (540 x 960), 16.77 million color, 180 Full view, capacitive touch screen with laminating process, super bright MTK 6582M 1.3 GHz Quad Core Processor with 8GB ROM, 1GB RAM 8MP Camera with LED Flash with HD recording , 5MP Front Camera for Video Calling and instant self portraits Free 10GB Cloud Backup Power by KATA Cloud 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.