Dropped iPhone 5s and now speaker is all static and doesn't really work

So I dropped my phone like on the ground, which had a shock proof case on it, but the phone has a chip in it and the speaker isn't working right. What do I do? What did I do to my phone? How much to get fixed? Any help is valued!

Needs speaker repair obviously. Dropping it causes the internal parts to loosen from motherboard. Just like if you dropped yourself off the 2nd floor doesn't matter if you have a shock proof case on, you will still break a bone or rattle something loose inside your body. Bring it to an iphone repair store. Will cost about $75 if they can fix it.