I dropped my iphone accidently, stuck on black screen and not turning on?

Ok I was running around and I tripped then my iPhone fell out of my pocket, I picked it up and noticed it was on a grayish screen, I managed to turn it off by holding both the home screen and the power button, but when I tried to turn it on, it would not, it was stuck on a black screen, I'm able to hear sounds coming from the iPhone but not sure what to do.

Added (1). it won't turn on if I hold down the home and power button

If it looks like the phone is still on, leave it until the battery dies then try again. If it is off and doesn't turn on your screen is probably messed up and you need to change it or get a new phone

Iphones break pretty easy. You could bring it in to get repaired but it will take forever and you'll have to pay so much that you might as well just get a new phone… If you do that, don't get another iphone unless you want more problems like this. Get android, they're better and cheaper anyhow