iPhone Camera app doesn't work but some other apps can still use it I have the iPhone X with latest iOS installed.
Original Camera App: Front Camera and Back Camera: Non of them work. Black screen.
Third Party Camera Apps: Same issue.
SnapChat and Instagram: Front Facing camera works!! but not back camera.
I check the &quot;Voice Over&quot; feature some websites were suggesting but I don't have it enabled anyways.
I have also done a “full restore factory settings” and backup/restore too.
So is it still a software issue or is it time to give up on this iPhone's camera?
I’ve seen this be a temporary situation.

Power off your phone - normal controlled shut down
Power it on - test camera app before you run any other app

If that fails, back up and restore the phone. I’ve not seen erase all content and settings fix this, but I always try that before I restore since it’s a lot faster and I’m about to reload a backup either way at that point.
Once you’re sure it’s not a software issue, then it’s time for a hardware repair or swap. Apple has replaced my camera module on that model phone and I was extremely satisfied with the results. Much cheaper than a new phone as well even if you pay for the repair instead of AppleCare or warranty.