I have a vanilla Samsung Galaxy S3, and just a month or two ago the back camera won't work. Whenever I use the default Jelly Bean camera app, it just pops up a message saying: "Camera Failed." then closes the app.
I downloaded a third party camera app to use the forward-facing camera, which works fine. This happened very recently after I got the phone (it was a replacement) and has been in a rugged case the entire time. I don't recall any trauma to the camera itself, either.
Any fixes or what I might be doing wrong?