Samsung Gio Hard Reset -
Use this method if the phone is frozen, stuck on the Samsung logo, or if you cannot unlock the screen. : Completely turn off your Samsung Galaxy Gio
Performing a hard reset on a Samsung Galaxy Gio (GT-S5660) Go to product viewer dialog for this item.
You can also trigger a full reset by entering a specific code into the phone's dialer. : *2767*3855# Samsung Gio Hard Reset
: Navigate to "Yes -- delete all user data" and press the Home button again to confirm.
: Press and hold the Home button (center) and the Power button simultaneously. Use this method if the phone is frozen,
Highlight and press the Home button to select it.
Select and then tap Erase everything to begin the process. Option 3: Hard Reset via Secret Code : *2767*3855# : Navigate to "Yes -- delete
: A hard reset will permanently delete all contacts, photos, and apps stored on the internal memory. Always back up your data to a computer or SD card first if possible.