... . won't easily fall off Lower Whitewash phone accessoriess in Noble designs for Iphone4s. 100% won't fall off easily. The ... our QC department. Normally, the process of checking Mobile Phone is as follows:1.Functioning Test: Outlook, Calibrate screen, Keyboard, ... G-Sensor, Bluetooth, Microphone, Speaker2. We shall test if there is any other special function.3. Accessory Test: Battery, USB Cable ...