Walking down the street and text messaging friends on your iPhone 4? well what if a stranger bumps into you by accident and makes you drop your iPhone 4? you can be assured the body will be safe but you will be unable to turn it on. This YouTube video demonstrates how dropping your iPhone 4 even once can send it into a bricked state, although i have to admit it took A LOT of drops to damage the body for that I have to give Apple the thumb up.
What happens if you drop your iPhone 4