I dropped my iphone 4s and the screen went black?

So i dropped my iphone 4s and the screen went black but i can still hear it should i buy a new screen

I also opened the back and tried pushing on the metal thing no response

there's a crack in my screen

Added (1). I've tried every step like resetting it and ext i pus the vibrate button and i can hear it so i know its on so all in all if i buy a new screen will it be fixed?

Cool story bro