Why does my screen have these black and purple lines on the front camera?

[AC Question]

I have a Galaxy S4 and I accidentally dropped it on concrete. There is a dent above the front, so whenever I use the front camera, black and purple lines appear on the screen. The odd thing is that the back camera is perfectly fine and wasn't affected in any way when I dropped my phone. I'm pretty sad/annoyed right now since I saved up all my money to buy this phone a few years ago and now a part of it is all jacked up.

Here's a picture of the lines:
m.imgur.com/gallery/SF8izqz

 

[B. Diddy]

Welcome to Android Central! It looks like something cracked from the fall. Look carefully at the glass over the front-facing camera. Is the screen glass cracked there? If so, get the glass replaced. If the screen glass is intact, though, then the camera lens itself likely cracked, and you'd have to get the camera module replaced at a repair shop.

 

[Lili White1]

Damn it, my phone has the exact same lines. Except there are no visible cracks.