Apple's front camera can't take pictures with a black screen.

Check the camera status, update or reinstall the application, restart the device, etc.

1. Check the status of the camera: the camera may be damaged, loose or in poor contact, and cannot work normally. Try tapping the back of the phone gently to see if it can return to normal. If it is suspected that it is a hardware problem, it is recommended to seek the help of a professional repair shop for testing and maintenance.

2. Update or reinstall the application: Some applications may not be completely compatible with the iOS 17 system, resulting in abnormal camera function. Please try to update the application to the latest version and make sure that the application has been granted permission to use the camera.

3. Restart the device: Press and hold the power button and the volume reduction button until the shutdown slider appears on the screen. Turn off the power, wait a few seconds, and then press the power button again to restart the device. This will help clear temporary caches and errors that may cause problems.