Hi, I've also had this issue and I've tried clearing the cache and force stopping the camera to no avail. userLQjg1UrbUd's solution works for making the issue temporary, but it is still reoccurring nonetheless. Another two issues I've been having have been that if the rear camera freezes for too long, the app will crash, and then the rear camera refuses to focus sometimes when it does work and there seems to be no solution to these either. Has there been any progress on fixing this main issue or either of these other ones?
Mine has started doing this as well. My quick fix that has been working, is I hit the selfie camera, and that unfreezes it, and then I swap back to the rear and it's working normal again. This has happened to me all in the last few days. Not sure why this has started.
Question to Ronnie? Is your devise inside of a case, or in closure of any type?
If so, check to see if the case is the the correct case made for your device! If it's not, you just may have found your problem!
I HOPE THIS HELPS YOU GOOD LUCK!
Does this happen with all camera apps or just the built-in one? the Galaxy S10 is a pretty new phone and update might have caused an issue or there might be some type of bug. If that's the case hopefully the next update will fix it.
At this point, I would recommend having the phone evaluated by a certified technician. You may have two options for this depending on your location. You can either visit a local uBreakiFix location or you can send your device into the Samsung service center.