I did this on 2 separate phones. The first time, I did it according to directions, and it worked well. However, the adhesive pulled off in the process. On the 2nd phone I used a handwarmer to slightly warm the home button area. (I think an iOpener would work best, but I didn’t have one on hand). With the constant pressure after being heated, the home button assembly came off easily, and the adhesive stayed in place. I’ll definitely use slight heat in the future for this step as it seems to lessen the possibility of damaging the assembly.