Do you mean the folio cover that takes the place of the original back cover? I have one, there is no cover for the camera lense. Unless you fold over the front flap. I have one right here with me, not on my phone, and the camera lense area is a hole, no cover. Also it doesn't extend past the lense. So how does it protect the lense?
Or which folio cover are you talking about? Brand name? Link?
It you really want to protect the camera lense, a cover that extends past the lense will work. I ended up getting one of those as the folio cover looked to masculine for me. Even though there's a bit of width to the phone now, I feel better. The case (Incipio Pro) even extends a bit in the front to protect the screen, although I also got screen covers. I lay mine screen down at night so notifications or the phone coming on, doesn't disturb my sleep.
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