To unlock an Airtel ZTE router to use other SIM cards, the process generally involves obtaining a unique 16-digit unlock code

Method 4: The “Factory Reset + Hidden Menu” Trick (For Some 5G Models)

Step 4: Manual Unlock via AT Commands (Advanced)

Method 4: Flashing Generic Firmware (Advanced Users Only)

• APN Settings: You’ll likely need to manually set the Access Point Name (APN) . For Jio, use jionet; for Vi, use www.
• Band Support: Ensure the new SIM card supports the frequency bands your ZTE router uses (e.g., ZTE MC801A is great for n78 5G band).

Method 2: Using the ZTE Unlock Code (Advanced)

If your router is working but a specific phone or laptop can't connect, you may have accidentally "blacklisted" that device. Log into the admin panel. Navigate to Block List (or Blacklist). Find your device in the list and click

Note:

Airtel frequently patches these default passwords via firmware updates. If they fail, move to Method 2.