iFixYouri did a iPhone 4 drop test, dropping the iPhone 4 from a waist level height and the iPhone’s screen smashed after the 3rd drop.
This is not any scientific experiment, all they tried to do is drop iPhone 4 on road multiple times to see what will happen to it. After the 2nd drop iPhone 4 stop working and seems to have switched off. 3rd drop and the iPhone 4 ‘Super Hard and Strong Screen‘ is smashed.
Check out their Video: