provide NCK (Network Codes) after you submit your IMEI, though processing can take several days. Open Source Tools

After entering the code, the device will accept the foreign SIM card. You can verify by checking the device status page, which should show “Unlocked” or no lock message.

Open a web browser and type http://192.168.8.1 or http://192.168.1.1 in the address bar.

However, for devices with security patches dated after June 2020 or those running EMUI 11 or later, v4/v5 algorithms will fail. In those cases, you must rely on official carrier unlocking or professional remote services.

Carefully type your 16-digit v4 or v5 unlock code. Confirm: Tap Unlock or OK .

By using the correct New Algo V4 or V5 code, you can significantly increase the resale value of your Huawei hardware and save money on roaming charges by using local SIM cards during travel.

Before proceeding, determine which algorithm your device uses:

Huawei has evolved its locking mechanism over several generations. Older devices use a simpler algorithm often called the “Old Algo,” while newer devices employ enhanced security—referred to in the community as (Algorithm version 4) and V5 (Algorithm version 5).

As Huawei patched the old vulnerability, they introduced the "New Algo."

Professional repair shops use physical hardware interfaces to service modern Huawei phones.