Optik hui, function well

first of all I would like to say that this is my first review and I am somewhat ungeübtdarin, but I do my best
First, the positive features of Arachnophobia Bumpers:
-very attractive design
-very facilitated
-no matter how one puts or is it always about 5mm "air" to the device to be protected due to the convex corners to be iphone 4
-Good protection of sensitive glass back through visually appealing aluminum plate with "louvers"

We come now to the negative features in my eyes:
-Due to the construction can freely dust, liquids or other foreign objects both sides, front and also limits "from behind" enforce the iphone
-Due a pure aluminum structure without absorbing rubber or silicone elements / inserts can not be absorbed impact energy during a fall
-and now the main point of criticism: the readiness to receive the iPhone goes from me 5 bar to 2 bar back, I could depending on where I am in the house was not to use my WiFi but the iPhone 3G activated, an absurdity !!!!!! !!!

Conclusion:
One of the most beautiful in my opinion form Bumper I know, fall protection and foreign bodies but rather doubtful, and that he is supposed to bring about matrimonial.
and the death-blow he gets because of insufficient commitment of the iPhone due to massive "shielding"