Worked as advertised. I suggest removing the glass, just makes it easier to hold the lower half using both hands so one can wiggle the tweezers around a bit when removing the old adhesive, installing the new adhesive and securing the battery connector cover., . The screws are TINY, so I’d suggest a magnetic pad to keep the screws organized. Also suggest the screw tool heads be magnetized before beginning ( a refrigerator magnet will do the job), just lay them on a magnetic strip for an hour or so before beginning. Take your time, it took me 3 hours because when I felt I was rushing…..moving to fast, having problems with dexterity etc…I’d just walk away from the job for 20 minutes or so. This is a great product and I’d recommend it to anyone replacing an iPhone battery.