Apple mobile phone rear camera black screen can not take pictures.

The reason for this situation is permission problem, camera failure, software conflict or error.

1. Permission: The camera of Apple mobile phone needs corresponding permission. If the user does not give the camera application proper rights, the camera may not work properly. This usually happens after the user installs a new camera application or changes the permission settings.

2. Camera failure: If the camera of Apple's mobile phone fails, the rear camera may be black or unable to take pictures. This kind of fault may be caused by camera hardware damage, camera driver problems or system errors.

3. Software conflict or error: Sometimes the problem that Apple's mobile phone rear camera can't take pictures with a black screen may be caused by software conflict or error. This may be because an application conflicts with the camera application, or the system itself has an error.