While Apple has received much praise for the aesthetics of its iPhone designs, it has also received criticism over durability issues, with many users unfortunately experiencing the problems with glass displays after dropping their devices onto hard surfaces. The iPhone 4 and 4S in particular received have criticism for their use of glass rear panels in addition to the front panel needed to accommodate the devices' displays. On the iPhone 5 and fifth-generation iPod touch, Apple began using sapphire crystal to cover the rear camera, providing superior durability and scratch resistance.Although the surface of the iSight camera is as clear as glass, it’s not made of glass. It’s actually sapphire crystal, whose hardness is second only to diamo
