iFixYouri tests what happens when you drop the iPhone 4. Apple claims the phone is protected by so-called Gorilla Glass, but the test reveals it's still quite easy to ruin your phone by accidentally dropping it a couple of times.
We made sure the area where we dropped it had no debris.
Drop 1 - Ok
Drop 2 - Still Ok - Seemed to have turned off
Drop 3 - Landed on back - scuffs
Drop 4 - Cracked iPhone Screen
The 4th drop did it in.