Usually requires the IMEI (found by dialing *#06# ) and sometimes the Serial Number .
Some websites claim to generate unlock codes (NCK, SPCK, etc.) for Huawei phones using the IMEI number, allegedly to remove network/simlock without carrier permission. huawei unlock code calculator online
These services act as intermediaries with the manufacturer's database to provide the correct NCK code. Mobile Unlocked Known for quick turnaround and 100% legal unlocking. Usually requires the IMEI (found by dialing *#06#