Broken iPhone 5 camera..

My iPhone 5 camera one day began not to work. I haven't dropped it on anything hard and I take good care of my phone. Now my camera is blurry and will not focus. I have tried restoring it, taking off some apps and completely clearing my phone in case there was a bugged app. Nothing helped. My phone is only a year and 3 months old and now I have to pay $300 for either a new camera or an upgrade to an iPhone 5c/5s. Does anyone have any temporary solutions?