01. flip your phone off. If it's in frozen mode or in decorated mode then take away the battery and insert it once a couple of seconds.
02. Press and hold Volume Up+ power till power is on with a menu together with “Android system recovery”.
03. Use Volume Up+/Down-- to scroll and use menu/camera/power/volume up to pick.
04. choose “clear flash” from the menu.
05. now “Yes and clear all data”.
06. once the “reset” is completed, then choose “Reboot system now”