I have an AT&T Galaxy S3 and cracked my screen back in May. Here's what I purchased:

• Screen Replacement Kit (Amazon): $10.99
• UV LOCA Glue (Amazon): $6.99

Replacing the glass wasn't difficult for me (but it has been for others)- you just have to read all the instructions you can find. Watching a tutorial on YouTube is helpful as well. The instructions it comes with are pretty bad; follow the ones on iFixIt and this helpful Amazon review.

If you want your glass repair to look OEM, then I HIGHLY recommend using the LOCA glue. What this does is it adheres the glass to the digitizer and allows accurate touch points. It also fills the gap between those 2 components which some people didn't understand that a direct glass replacement isn't enough. Watch this LOCA glue replacement on YouTube for a better understanding. The glue I purchased is currently sold out, but anything similar will do just fine.

Tips:

• Hairdryer works perfectly to remove the screen- this is what I used and didn't take very long
• Use clear packaging tape over your cracked glass for easy removal
• Do this repair on a sunny day- the LOCA glue hardens only with UV light (well it turns into a dry gel technically). Just put it outside for an hour afterwards.
• Use leftover double-sided tape from the kit to reinforce the "dam" so the glue doesn't leak (see the YouTube vid for placement)