Will apple notice I replaced my iPhone screen?

Long story short, I cracked my screen and got it fixed at a repair shop. They somehow made my camera stop working (which they won't admit) but told me my phone is still under warranty and to take it to apple. The repair guy did his best to make it look like the phone has never been opened. (Voids warranty) I noticed the front camera (tiny cut out hole) looks a little less tinted when comparing it to other phones. You think they'll know if I'm lying? The camera is my favorite part of the iPhone.

Just take it to an apple store, and don't say anything about it. Chances are the apple guys won't even notice/care, unless it is super evident you opened it.

Nope. They will probably notice it straight away and refuse to do anything. It's the Apple way really. You could go try it yourself.

Yes they will notice. You can't look at an Apple device the wrong way without voiding the warranty.