Before you try the factory reset or hard reset on your device, make sure that you have backup your important files. Restoring the default settings or factory reset your device will delete all your existing files and will go back to its initial state.
>>> Go to Settings, and select Backup & reset.
>>> Tap on Factory data reset.
>>> Then Reset phone.
>>> Confirm by tapping Erase everything. You just need to wait while your phone deleting your files and restoring your settings to default.
>>> Turn OFF your phone. Press and hold the Power Button and Volume Up for a few seconds.
>>> Release the buttons once a menu for system recovery would show on your screen.
>>> Press the Volume down button to navigate to the Wipe data/Factory reset option. Press the Power Button to confirm.
>>> Use the Volume Down key to choose Yes - delete all user data and press the Power button again to select.
>>> Wait until complete hard reset, select reboot system now and press Power button.
>>> This should take a several minutes, then your phone will reboot.
The instruction provided is the general steps on how to Hard Reset and Factory Reset.If the instruction will not work, please make a comment and we will immediately find the correct procedure. Thanks.