How to troubleshoot the face unlock failure:

1. Since the face is compared with the photo during entry when the face is unlocked and recognized, if your face changes a lot, there will be a greater probability that the unlock will fail. It is recommended that you check whether the change is too large during entry. Heavy makeup, glasses, etc.)

2. Check whether "Allow detection of human face when notification bright screen" is turned on. If you cannot unlock face successfully when notification is bright screen because this option is not turned on.

3. Whether the lock screen is blocked. For example, the lock screen of a third-party application (such as music) will block the system lock screen and cause the face not to be detected.

4. It is recommended that you wipe the front camera with a cotton cloth and try

5. Test after restarting the face unlock button

6. If the above solution is invalid, you may reinstall the complete package and restore the factory settings after backing up the data.