Origineel bericht door: oldturkey03 ,
"Unfortunately, the LCD panel is very securely glued to the glass and digitizer, with the entire assembly measuring 3.05mm thick. It appears that if you break the glass, you'll have to replace the iPhone 4's glass, digitizer, and LCD as a single assembly." from the ifixit teardown. Many have tried to just replace the glass, most have failed. So if your glass is broken, I recommend the exchange of the whole assembly. Do a search on here http://www.ifixit.com/Answers/Device/iPhone+4 and you see what I mean. the instructions how to do it are here [guide|3148] and the part is available here [product|IF182-003] and I am sure many other places. Good Luck.