Insert a SIM card from a different carrier. If the LED indicator turns solid blue, the device is successfully registered on the new network.
Power the router back on and connect your computer to its Wi-Fi. Enter the Code: Open your browser and go to 192.168.8.1 . A screen should automatically appear asking for a SIMLOCK Code Unlock Code unlock huawei b311221 install
Once unlocked, follow these steps to complete the installation: Unlock Huawei Modems - 3Community - Three Ireland Insert a SIM card from a different carrier
Most carrier-locked B311221s accept a numeric unlock code. unlock huawei b311221 install