1. Turn the power off.
2. Press and hold the following keys at the same time: Power/Lock key + the Volume down key .
3. Release the Power/Lock key and the Volume down key when you see the Factory Hard Reset screen.
4. Press the Power/Lock key to confirm (or press any other key to cancel).
When you press the Power/Lock key to confirm, the message "Are you sure you want to continue with erase?" is displayed.
5. Press the Power/Lock key and your phone will be restored to the factory settings. To cancel, press the Volume Keys.
Thanks S-Mod Trường Phát đã hỗ trợ