Thank you very much! Very clear instructions.

I didn’t have a iOpener kit, so I used the kind of things to keep you warm that you put in the microwave. It’s not too hot so it can’t damage the phone but warm enough for the glue to slightly melt. Then I used a dental floss to separate the adhesive from the battery.

But when I reassembled the phone the fingerprint reader was not working. It was because I damaged the connections which are on the top left above the battery (opposite side of where the battery is connected (step 6). I managed to fix it but I’d advise to be very careful any time you manipulate the phone when removing the battery.