Acer Liquid S100 Hard Reset

Here How To Hard Reset Acer Liquid S100

Turn off your phone,Remove battery for about five seconds and put it back

Press and hold the Power until you feel your smartphone vibrate and/or you see the Acer logo screen. Press and hold the Volume up and Volume down buttons. 

Use the Volume up button to select Clean boot:YES. Press the camera button to confirm.

Finish Product