After 5 unsuccessful attempts to unlock your device, the lock screen will be locked for 30 seconds.
While locked out, tap UNLOCK VIA GOOGLE. Note: The device must have already been associated with a Google account for the UNLOCK VIA GOOGLE option to display.If your Google account was not added, you must do an alternate factory reset of the device. Search tutorials for 'reset' for Reset Device instructions.
Enter the Google account username used to set up the device, then tap the Password field.