With the "Reset phone" function, the Huawei smartphone is reset to the factory settings or delivery status. All data is permanently removed from the internal memory. This includes:

Android 10 | EMUI 10.0
Step 1:  Open the  settings
Step 2:  Tap on  System & updates
Step 3:  Tap on  Reset
Step 4:  Tap on  Reset phone
Step 5:  Tap on  Reset Phone
Step 6:  Type in your  PIN
Step 7:  Confirm with  Reset Phone
  1. Open the settings
  2. Tap on System & updates
  3. Tap on Reset
  4. Tap on Reset phone
  5. Tap on Reset Phone
  6. Type in your PIN
  7. Confirm with Reset Phone

Huawei Instructions