Factory reset will erase all data from your device's internal storage.
You have a problem with your device or you want to reset your device, you may use factory reset.
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Navigate to Settings > System > Reset options
Tap Erase all data (factory reset)
Please be aware that factory reset will erase all data. Tap RESET PHONE to start the factory reset
Tap ERASE EVERYTHING to confirm the factory reset
Press and hold Power + Volume Up + Home buttons simultaneously when turning on the device
After showing up the "Smart Beyond Rugged" logo, release the buttons. Now your device is entered Android Recovery mode
Using Volume(move up&down) and Power(select) buttons, select 'Wipe data/factory reset'
After wiping the data, select 'Reboot system now'