How to factory reset Android when you can’t get into the Settings screen

To do it:

1. Turn off your device
2. Press and hold Volume Down and Power while the device turns itself on
3. When you see the options screen, use Volume Down to move down and highlight Recovery Mode
4. Press the Power button to confirm your selection
5. Wait for the image of the sad Android, then hold down Power. Keep it held and press and release the Volume Up button.
6. Once again, use the Volume Down button to navigate. This time you want Wipe Data / Factory Reset. Use Power to confirm the selection.
7. Use Volume Down to highlight the Yes -- Delete All User Data option. Use Power to confirm.
8. Wait a bit for the reset to do its stuff and then choose Reboot to restart your device.