Why is my iphone 5 rear camera suddenly blurry?

So it's not that it's dirty, I've tried cleaning it. It was literally fine yesterday but all of a sudden it like won't focus. When I first switch to the rear cam, for a split second it's fine. Then it just goes to being unfocused. Is it just a problem with the auto focus? If so, and I have to take it into apple, will I have to pay for a solution? If so how much. P.s my front defacing camera is completely fine

My iPhone 5s will not turn on?

I had left my phone charging overnight last night and the next morning I turned it on, and it went to the white screen with the black apple logo. It was there for an unusually long amount of time so, I stopped the screen with the home and power button. After that I tried to reboot it again, but this time it would turn to the white logo screen, then blue, then black, and then again.

My apple account isn't working?

I'm trying to connect my ipod back to my apple account. I know the password and I just changed it. But it's not working. It keeps saying its incorrect. I have an iphone 5 and ipod 4. If somone knew what was up or could help me out here. That would be great.