If the above method doesn't work for you, there are alternative methods to unlock your Airtel ZTE router:
If you’re an Airtel customer using a ZTE router (common models include the , F660 , or F680 ), you’ve likely noticed certain restrictions. You might be locked out of advanced settings, unable to change your APN, or forced to use Airtel’s default configuration. how to unlock airtel zte router
Find the 15-digit IMEI number on the sticker at the back of the router or in the "Device Information" section of your settings. If the above method doesn't work for you,
Caution: third‑party methods can be risky. Avoid anyone promising “free” unlocks that ask for sensitive account credentials. or F680 )