The developer options can be unlocked on the Huawei smartphone by tapping the build number seven times in System Preferences.
Most of the developer options settings are irrelevant for private use of the device, with exceptions such as USB debugging.

After tapping the build number seven times, we will be prompted to enter the unlock password if it has been set, after which the developer options will be unlocked and can be found under System & updates.

Android 10 (EMUI 10.0)
Step 1:  Open the  Settings
Step 2:  Tap on  About phone
Step 3:  Tap  seven times  on the  Build number
Step 4:  Watch the  pop-up
  1. Open the Settings
  2. Tap on About phone
  3. Tap seven times on the Build number
  4. Watch the pop-up

Huawei Instructions
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