AT&T iPhone 13 (Random camera seal that I had which is isn’t from unboxing videos, anyone have this out of the box too?)

So I picked up a brand new AT&T iPhone 13 (which was sealed), and when I opened up the box, there was a plastic film protecting the camera, but I did a lot of research and the unboxing videos on YouTube does not have the plastic film protecting the camera. I wonder if this has to do with the Carrier (AT&T) or Apple is just adding these plastic films for manufacturing purposes.