Mithu011 Said:
"Camera issue after iOS 16.5.1(c) set up: After setting up iOS 16.5.1(c), my iPhone 13 Pro Max back camera stop working and showing black screen but the front screen working slowly. May I know why it is happening and how I will gonna solve this problem???"
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Troubleshooting a Black iPhone iSight Camera:
A. First, Go Here: If the Camera or Flash on your iPhone, iPad, or iPod touch isn't Working - Apple Support
B. Uncover the Camera:
Is there anything covering the camera? If so, remove it.
B. Any Ungenuine Camera Message?:
Did you recently get the cameral replaced? If so, contact the person(s) who performed the replacement, and have them place a genuine camera in there.See Here: About Genuine iPhone Cameras - Apple Support.  They should have known better.