Just completed this took, probably took me an hour and half from start to plugging the phone back in after I was done. Seems to have worked very well! Do be careful pulling the adhesive out from behind the battery. If it breaks, it can be a little trickier to get it out. I had to heat up the adhesive through the back of the phone, but once I did that I was able to very carefully pry the battery out, using a pick as a load distributor on the battery.