|[*| black] The front glass panel of the iPhone is reported to be constructed of Corning [link|http://www.corning.com/gorillaglass/index.aspx|Gorilla Glass], a chemically strengthened alkali-aluminosilicate thin sheet glass that is reported to be 20 times stiffer and 30 times harder than plastic. black] Unfortunately, the LCD panel is very securely glued to the glass and
[* black] Gorilla Glass holds many [http://www.corning.com/uploadedFiles/Corporate/Gorilla_Glass/Assets/Video/Gorilla%20Glass_300k.wmv|advantages] as the iPhone 4's front panel, including its high resistance to wear and increased strength from an ion-exchange chemical strengthening process.
[* black] LED Backlight for the LCD.
digitizer, with the entire assembly measuring 3.05mm thick. It appears that if you break the glass, you'll have to [guide|3148|replace] the iPhone 4's glass, digitizer, and LCD as a single assembly.