The shell is very well made, as one would expect from Goodstyle, fits perfectly for OnePlus one and does not contribute to fat on. The cover does not have a magnet, as it says here in a review. If you open the Frondcover, including the display turns on, you close it again, so the display turns off again. This is handled well on the proximity sensor. Uncontrolled on and off the phone I could not observe so far.
The version without clip is also problem with the viewer position of cover on the table, in the version with clip I could imagine that it is wrong.
I am very satisfied and can only recommend the sleeve highly ....