Warning: Resetting your device will erase your phone memory completely. Remember to backup your device information and settings.
From the home screen please press MENU, then tap Settings > SD & device storage > Factory data reset > Reset device.
You can also perform a factory reset by using the buttons on the device.
1. With the device turned off, press and hold the VOLUME DOWN button, and then briefly press the POWER button.
2. Wait for the screen with the 3 Android images to appear, and then release the VOLUME DOWN button.
3. Press VOLUME DOWN to select FACTORY RESET, and then press POWER.
4. When asked to confirm, press VOLUME UP.
NOTE: Resetting your device to factory or manufacturer's default setting will delete all the data stored on your phone memory. Please backup your files first. To backup all of your personal information on your device, please refer to the?" "How do I backup my device".