Anti-theft:  ZTE ZMAX Pro

    The ZTE ZMAX Pro has anti-theft and may affect how you are able to master reset the device. To disable anti-theft, follow these steps:

     

    1. From the Home screen, tap Apps > Settings > Accounts > Google.
    2. Tap the desired Gmail address, then tap the menu icon with three dots
    3. Tap Remove account > REMOVE ACCOUNT.
    4. Repeat steps 2&3 for all remaining Google accounts.