OPPO phones can never recognize faces.

1. First, confirm whether the preview of the unlocking interface is normal. If the preview interface is blank, try to clean up the background application and check whether it can be restored. If the preview is normal, but the picture brightness is dark, you can try again in a bright environment and adjust the face angle to ensure that the whole face is within the recognition range.

2. Check whether the screen is damaged. If it is damaged, I suggest you go to OPPO Customer Service Center to change the screen. In face recognition, the system will compare and verify through the public security network. If the similarity returned by the public security network is low, face recognition will fail.

3. Adjust the angle of the phone to avoid reflection and occlusion. Please use standing or sitting posture for face recognition. If you are lying down, the system will determine that face recognition failed in order to ensure the safety of your funds. Close your eyes. Face recognition is unrecognizable.

4. Delete the entered face, re-enter it and check whether the unlock switch is turned on. Try again after restarting your phone. Restore the factory settings after backing up the data, and then try again. If the problem still exists, it is recommended that you bring your mobile phone, purchase invoice and warranty card to the local OPPO official service center for testing.

5, oppo mobile phone photo album character recognition function can not use the solution: the mobile phone does not open the face recognition setting. Just turn on "Face Recognition" in the settings. Using a third-party photo album application, the application may not support OPPO's person recognition function. You can use this function by using the photo album application that comes with OPPO.