VKWORLD VK6050S MTK6735 Quad Core Double SIM Card Double 4G Android 5.1 1.0GHZ Unlocked Cellphone (Black) MTK6735 Quad core 1.0GHZ double 4G, Android 5.1 GSM:850/900/1800/1900,WCDMA:850/900/2100, FDD:800/1800/2100/2600(1/3/7/20) 5.5 OGS inch screen,1280 x 720 pixels 5.0mp front+13.0mp rear camera Detected over all products before shipping