Have you ever experienced such a thing then you turn on your camera, it suddenly starts to show a lot of colors and faulty view, after that application stucks or turns off automatically. And it seems like any camera app is not working at that time, you see only a black view when you turn it on. After waiting about ~5 minutes everything is back to normal. It seems that GPS icon was stuck for a while too. Right now it's gone and camera working perfectly again. This happened second time while I have this phone and I don't know, it seems like it's software problems, because the camera itself is not faulty or something, it shows good view anytime you turn it on.