Once signed in, restart the tablet. The setup wizard should now say "Account Added." Method 3: Using a PC Tool (Fastboot/EDL) If manual methods fail, you may need a computer. ZTE FRP Tool:
The ZTE K87CA has OTG support. This trick forces the system to skip FRP. zte k87ca frp bypass
Inside the app, tap the three dots in the top right and select Browser Sign-in Add New Account: Sign in with any Google account that you have the password for. Once signed in, restart the tablet