Positive is the case protects the phone against ugly quirks from falls.
However, negative is the introduction for aggravated by the silicone and remove in or out of your pocket is possible
In addition, the dust begins from the envelope and they will turn gray after a few hours ... through water the dust can indeed remove
and it resumes its original black surface to but after a few hours it looks like hell again.
Last the worst point: in that the shell are always moves a little bit and wraps around the phone around with me on the bottom
also about 1 mm wide dull spots emerged reflecting surface below the keyboard at a distance of 1 mm 20-25, so all small uniform scratch
which are clearly watching and that is exactly the opposite of what the shell was supposed to bring.
You should protect your phone and do not scratch so only 2 stars.