While the device is powered on, use a pin to hold the button for about 10 seconds until the lights flash. Default credentials are often , though some versions use HUAWEI Global Key Specifications for Firmware Matching
If you are just locked out of the admin panel (not the SIM), use a factory reset: Locate the hole on the back of the router. B311-221 Unlock Firmware
While the device is powered on, use a pin to hold the button for about 10 seconds until the lights flash. Default credentials are often , though some versions use HUAWEI Global Key Specifications for Firmware Matching
If you are just locked out of the admin panel (not the SIM), use a factory reset: Locate the hole on the back of the router.