IPhone 6s Camera not working, what's the problem?

I recently left my phone on the back of a car… And it rode down the road for awhile before deciding to fall off and it fell facedown and shattered the entire thing. After getting the screen fixed, (luckily it was fixable) i noticed later that day a light white spot thats really small on the top of the screen slightly to the right from the center. My back camera is cracked, but it was previously to this and it worked just fine. My camera app just shows a black screen and neither the front/back camera work. On snapchat, it says to go to settings and fix my restrictions to allow my camera to work, but there are no restrictions. I have checked every setting. Any ideas what could be causing this?

It was too hot in the car and it heated the lens, which means it got melted. You have to get it repaired… NOW!

Maybe a solder broke and the camera is not working because of it.

You'll have the bring it to an Apple Store or your provider and have them fix it.