Unfortunately, there seems to be a problem in combination with the iPhone 5. At least with my device usage has formed above the frame of the phone where the permanent closure rests, a certain "luster" to the aluminum surface of the black iPhones after a few weeks, which seems to come from the closure. The place seems to be a little "polished" surface in the long run.
While this case for other devices (I have eg a very long time for the Nexus 7) is excellent, I can recommend the use of the sensitive case of the iPhone 5 only partially - at least for buyers who at at such a small flaw mobile interfere.