iphone 5 camera not focusing

Hmmm, I've never had this glitch. Have you tried tapping to focus (Tap on the thing you want to focus and then it'll focus) or does that not work anymore either?

First thing to try is to reset your device. Press and hold the Home and Sleep buttons simultaneously ignoring the red slider should one appear until the Apple logo appears. Let go of the buttons and let the device restart. See if that fixes your problem.

If that doesn't help make an appointment at at Apple store and have your device looked at by a technician.