How to Unlock ZTE MF631 Modem

ZTE MF631 is a 3G USB modem with the function of the rotator. This elegant terminal MF631 will give you instant access to the 3G network with download data rates up to 7.2 Mbps, upload 5.76 Mbps. It could support 3G UMTS 900/2100MHz. The modem also has an external antenna connector and a microSD card slot.

ZTE MF631 modem can be unlocked using a correct Unlock/NCK code. To unlock ZTE MF631 modem, you will have to enter the code purchased from 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.How to Unlock ZTE MF631 Modem

How to Unlock ZTE MF631 Modem

  1. 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 MF631 USB Modem.
  2. After inserting the SIM card in your modem, connect the modem to the USB port of your computer or laptop.
  3. Open “My Computer” and install the drivers from the virtual CD Rom if not installed already.
  4. The web browser should open automatically. If not, then open it manually and login to your device’s dashboard at or or depending on ZTE MF631 IP address.
  5. Type admin if prompt to enter the password.
  6. It should redirect you to the unlocking page automatically. If not, then go to Setting and search for the option to enter the Unlock/NCK code in your ZTE Modem.
  7. Enter the correct Unlock/NCK code received from and click OK, the Modem might reboot to display the new network.

The unlock/NCK code is not free. Place the order only if the router is asking to enter an unlock code after inserting an unsupported SIM.


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