In the user manual for the Galaxy S7, it states "Note: Prior to using the camera, remove the plastic protective covering from the camera lens." I have examined the lens and don't see a plastic cover. Does it really exist? If so, how do you remove it? I did see some videos on the Galaxy S6 for this, but I don't see the plastic. I carefully dug around the lens with my finger nail and didn't find anything. Thanks.