5s display issue.

Hey, I have made this test image to test if your borders look correctly - It is a 640x1136 black image with a white 1 pixel border: http://i.imgur.com/fkNMuD6.png

On my 5s, when tilted at more than 30 degrees the top line disappears just like the screen isn't glued to the glass as it should.
Here are a couple of pics: http://i.imgur.com/jXn0H2a.jpg http://i.imgur.com/Tgyx0ru.jpg

Is this normal or should I ask for a replacement?

 

It has nothing to do with the parallax/motion thing and there are no yellow spots or bleeding.
It's like the glass at top of the screen is thicker than on the rest of it, and so the image is appearing to form "under" it, not on the surface. Just look at this picture and you will see what I mean ( http://i.imgur.com/Tgyx0ru.jpg ).

 

Exactly, but I can see it only on the top part of the screen.
The sides and the lower part "cut off" perfectly, even when the phone is at an angle.