ACER Liquid Z5 Hard Reset By BuntyGSM Mobile Repairing Institute 29 April Bijendra Narsinghani Share To: Hard Reset ACER Liquid Z5 Turn off the phone, then press and hold Power button until you feel vibrates. Then release Power button and press and hold Volume Up + Volume Down for few seconds. Press Camera button to confirm operation "Clean Boot". Now your phone will restore to the factory default. WARNING !Hard Reset will erase all of your dataAll described operations you are doing at your own risk.