ZTE MF83 modem can be unlocked using a correct Unlock/NCK code. To unlock ZTE MF83 modem, you will have to enter the code purchased from unlockmyrouter.com or from any other unlocking server. After unlock, it will work with any SIM in any part of the country and worldwide. Don’t try any free code in your modem as the number of attempts is limited and wrong codes will permanently lock it.
Make sure your ZTE MF83 Router is at least 30% charged. If not, charge it.
Switch off your router and insert a non-acceptable Network SIM (i.e. if your router is locked to Network “A” then insert the sim of Network “B”) on your ZTE MF83 Router.
Now connect your router using a USB cable or establish a WiFi connection to ZTE MF83 Router with your computer.
The web browser should open automatically. If not, then open it manually and login to your device’s dashboard at http://192.168.0.1 or http://192.168.0.1 or http://192.168.8.1 depending on ZTE MF83 IP address.