Huawei devices only allow a limited number of unlock attempts (usually 10). Fake or outdated software will generate incorrect codes.
If a website claims a simple "Calculator v5" can unlock a brand new Huawei phone (like the P40 or P50) or a modern 4G/5G router, it is likely a scam or a virus. huawei unlock code calculator v5 free download install
Insert a SIM card from a different, unsupported network carrier. Huawei devices only allow a limited number of