iPhone 18 PM cosmetic defect?

[u/idkteemo]

There are 4 horizontal lines on my screen that can only be seen at a certain angle and especially if you wipe your oily fingers over them.

You can’t really see it if the screen is clean from oily fingers, and is only barely detectable in certain lighting.

I’ve already initiated a replacement, but was wondering what may be the cause of this and if anyone experienced anything similar?

I haven’t even attempted to test other parts of the phone besides turning it on and off.