Personally I returned my smart cover because I thought it interfered with the use of the device. The wake/sleep functionality is nice, but the hinge gets in the way when holding the device in the portrait orientation, and it makes the iPad too thick when you fold it back. I found that you had to fold it in half when using it in portrait or else the cover would just flap about. (though that does raise it off a table to protect the back from scratches, which is nice)
It's somewhat useful for propping up the iPad for typing, but not stable at all when you use it to prop the iPad up.
I ended up pulling it off the iPad almost every time I went to use it.
I didn't find them to be particularly high quality either, especially for the price they were asking. The leather marks easily, and I also found that the finish around the hinge started flaking, and it would leave black marks on the side of my iPad and inside of the cover. I had two covers this happened with before deciding to get a refund.
that has not been the case for me. the cover actually leaves lines that I can see where the ridges are. Anyone else???
There are two possibilities here:
- The Smart Cover is cleaning your screen everywhere that's touching, and obviously the hinges don't make contact with the screen.
- The Smart Cover has accumulated lots of oils and/or dirt over time, and deposits them on the glass when you close it.
The latter seems most likely to me, especially if you actually use the surface of the smart cover to clean the iPad screen rather than a microfibre cloth. (I recommend E-Cloth's blue "glass & polishing" cloth for screens)