Why is my phone not turning on, and how can I fix it?

Hey! So I am having a problem with my iPhone 6. I was messing around with my friends when my phone fell out of my pocket onto the road. It worked just fine, but then it fell out again. I tried turning it on and the screen remained black. I held the Lock and home button together to reset my phone, but I didn't see the apple logo for when it resets.

My phone has a Life-proof case along with a glass screen protecter, and when my phone fell, nothing was broke, shattered, etc. I thought that maybe it was completely dead for some reason (Even though my phone was on 92%), so I plugged it in, but nothing happened. I have looked everywhere and the only thing I have found is to backup everything to iTunes then do a factory reset. Is there any other way to help with this problem?