Just finished successful repair. I would add this: most folks will be here because of cracked screen. This is not easy; believe the 'complex' rating on this repair. I put tape on my screen because it was badly cracked. This made the suction cup useless, because it just sucked the tape off the scree.n. I used the razor blade technique which worked great, it should be used in the demo, and a good blade should be in the kit.