Android 8.0.0 and up:

HCU + Phoenix license account.
• Supported devices: https://hcu-client.com/supported-models.php
• Bootloader unlock instructions: https://hcu-client.com/huawei-bootloader-unlock-via-testpoint
• Other guides: https://www.dc-unlocker.com/huawei-bootloader-unlock-and-repair-by-tp

Android 7 and lower:

Huawei Bootloader unlock code instant reading from phone with DC-Unlocker application (Windows PC only).
• Supported devices: https://www.dc-unlocker.com/android-feature-table?filter=bootloader
• Code reading guide: https://www.dc-unlocker.com/how-to-read-huawei-bootloader-unlock-code
• How unlock bootloader https://www.dc-unlocker.com/free-huawei-bootloader-unlock-tutorial
• Service for working phones only!
• If your phone stuck in fastboot, you need repair phone first. Check our other services at https://www.dc-unlocker.com

All services are paid.