I brought the bumper case when I found out about the iPhones problem of losing connection when you are holding it at the wrong position.
The case has protected my iPhone from a drop as i worry with the iPhone having both a glass front and back and as the case wraps round the back and the front of the phone it protected it.
One drawback of the product is that the silent switch which is used to put the phone into or out of silent monde is hard to operate as its just a cut out in the case which hasn't been thought though very well.
The volume buttons work well as the case has both volume up and down on surface level that is quite responsive also the power button works well as it is the same as the volume rockers.
The headphone jack can be a problem as if the headphone wire is thick it will not fit though the gap i have had to stop using some of my headphones.

Just a quick update to my review my bumper case has now ripped on the back leaving the rubber that wraps around the back hanging of, and also i would have to say that if you are planning to get this case and use your phone both in and out of the case i would not buy as it marks the metal sides of the iphone