Summary of techniques
Joining the club, doing research how to replace the screen. A bit of my summarizing what i've learned from reading all this.
It seem that the people here are in 2 groups:
A group use some chemical solvent (Goo - off, acetone etc.) to loosen the glue.
B group says it's not necessary and that just the razor does the job.
What particularly interests me is the approach access people have chosen. Majority probably went scraping of the glass as the iphone is flat on the table without any disassembly. Few wrote that they went from the side ??? I imagine they disassembled the phone to some level, removed the "thin silver frame".
as described here:
http://www.hitchsource.com/blog/2008/06/fixing-the-broken-glass-on-my-iphone/
Teresa Lewis Says:
June 26th, 2008 at 11:53 pm
I fixed my broken glass similarly, but used Ifixit.com website to take off the bevel (outside silver frame) from the phone to get at the broken glass from the side. I used an exacto knife with the angled blade and put goof off on the blade to loosen the glue. Too much of it and it seeps under the LCD screen. It all went perfectly until I twisted the knife towards the end of the process in a rush and made a small crack on the LCD screen (over $250 to replace). I left the small crack and glued my new glass cover with liquid nails from home depot. It was too thick and I had to take off the new screen (liquid nails has about an hour til it is too hard to remove) I had to apply very little dots and then scrape them smooth to get the glass close enough. Anyway, if you are doing this replacement, be careful to not break the LCD and be patient - it takes some time to do. Good luck all! Great article and pictures BTW! Teresa
Still, there is not any clever miraculous easy solution, either with a solvent or smart mechanical approach.
The questions i have for the experienced in this matter.
1) what about removing the LCD/digitized/glass in one piece - so the full disassembly will be needed, and then dipping the glass into a solution just deep enough to go into the glue layer to eat it up, the glass would then fall by itself
2) the approach from the side seem easier to be able to slide a big portion of the blade under the glass, cutting from all sides - quite possible to remove big chunks?
3) if you manage to get it off without breaking it, the instructions on gluing the new glass on are not clear to me. Most of you just glued under the dark part of the glass, leaving the glass and the digitized without gluing. Then someone wrote he broke the screen with slight pressure as there was a bit of space between the new glass and digitizer. How is this ? When you remove the broken glass, remove the glue and put new glass on top - is it flush level with the LCD unit ?
4) just though about a crack in a windshield - then can fix small cracks before it spreads. don't know the stuff they use, but is this something that could work for the iphone screen? instead of removing and replacing just seeping some fluid into the cracks to fusing it back together?