This is the dumbest question I've probably ever asked on the internet, but my wife bought a Moto Z2. The first one had some sort of antenna issue shortly after she bought it, so we got a warranty replacement. I'm not looking over the phone to apply a new screen protector we bought and it appears there's already some sort of plastic protector over the screen, but I can't tell if it should be there or not. It feels so much more adhesive underneath than the factory plastic that protects screens. I'm afraid if I continue to peel it off it will leave behind some heavy residue. It almost feels like it's part of the screen itself.
My extremely dumb question: Am I not supposed to remove this plastic? Does anyone else see this on their phone? I can't seem to find anybody else reporting it. This is a factory replacement, so maybe it's refurbished and this is a screen protector from a previous owner?
Pictures of the part I'd begun peeling up before I realized this was not normal factory plastic.