... Capacitive touch screen Resolution: 800*480(RGB)Display:7 " LCD panel touch screen (16:9) Camera:Front 0.3 MP WIFI: built ... Frequency response: 20Hz to 20000HzInterface: 1*Mini USB 2.0, 1*3.5mm earphone jack,1*DC jack, 1*TF card slotIn/Output :input ... . Normally, the process of checking Mobile Phone is as follows:1.Functioning Test: Outlook, Calibrate screen, Keyboard, WIFI, Camera, all Card ...