Here is my phone after being run over by 5 cars passing my double-parked car when it fell out of my pocket in the street. A little muddy but otherwise unscathed. The first experience I had with the iPhone was dropping it on the pavement right outside the Apple Store and smashing the screen. At the time there were no cases even available except for ordering online. So after that happened I did my research and read the phone case reviews to find the best one. The Speck case had the best reviews and they were so right.
The only damage of any kind was that the raised speck logo and wordmark on the back of the case got scraped a little. The phone works the same, the screen is intact, the camera lens is fine. In fact, I am incredulous.