Purchased my Note 4 from Verizon yesterday. I noticed this morning that there is what appears to be an air bubble at the edge of the button, like what appears when adding a plastic screen protector to a phone. Does anyone know if there is a protective film over the button like there was over the screen (for protection during shipping)? I'm hesitant to start peeling away at it, but it does look like a film of some type. Thanks.