How can I fix the black screen issue on my iPhone 16 Pro?

Did you perform a Forced Restart --> Force restart iPhone - Apple Support

If that doesn't help, then it would be time to schedule an appointment at your Apple Store Genius Bar --> Genius Bar Reservation and Apple Support Options - Apple

lemonjuju98 wrote:

My IPhone 16 pro front camera turned black screen. already updated the IOS software

and did restart. Doesn’t work also with third party apps.

[Re-Titled by Moderator]

If the camera or flash on your iPhone, iPad, or iPod touch isn't working - Apple Support