Hard Reset GIONEE Marathon M3
- In order to turn off the device, hold down the Power key for a short while.
- Then press and hold Volume Down + Power button together for a few seconds.
- When the phone shows the Gionee Logo release only the Power key.
- Keep holding Volum Down button until the Factory Mode appears.
- Use Volume buttons to select "Clear eMMC" and tap the Power button to confirm.
- Wait to complete the whole operation.