The shell is perfect, all openings are there where they belong. I can turn it perfectly loud and quiet. Also, the infrared sensor has enough space to do his job perfectly. Once it's me in the hallway slipped from his hand and hang luckily between stairs and railing remained through the rubber coating of the crash was so complete. The shell has my phone so before life is gerettet.Der advantage of a silicone case with no cover that one, if you like wearing it in your pocket always has a clean display of the pants pocket, the display is automatically polished and pants is washed and so everything is clean again.