I had to use far more pressure to remove the bracket than I was comfortable with and when it came loose it went flying. Re-attaching is easy, but I used some hobby glue to secure it in place, so if the screen breaks again, that part is NOT coming off again. I’m guessing because I did this I don’t have the “depressed” issues that others have described, it seems to be like new at this point.
As the others noted, the suction cup is useless on a cracked screen, especially if you’ve applied tape (like the instructions say you should). The screen I was working on was busted up pretty bad, I ended up removing it and then going back to remove the edge glass and adhesive. When you have a really busted screen just take your time and use a heat gun or good hot hair dryer and it will eventually come off.
I used an iSesame tool vs a razor to pry the edge (from a previous replacement project) but again, the iOpener and suction cup are useless.
The iOpener didn’t work for me at all, zero, it literally did nothing. I resorted to my heat gun on low and yeah you need to be super careful, but once I started the adhesive came off pretty easy.