Acer Iconia B1-71 Pattern Lock Remove

 

Remember That Doing This Procedure All Installed Applications And Data Will Be Removed.
First Backup Your All Important Data Before Doing Hard Reset Your Smart Phone.
Please Check The Battery is full.Turn off the phone and press and hold volume up

and power button for 3 to 4 seconds .After 3 seconds release power button dont releasevolume up button until display on.Chose (Sd Image UpdateMode).Chose Wipe Data Factory Reset.Use Volume Button To Navigate And Power To Enter.