This part was really difficult. After reading other comments, I applied heat right away (I balanced my phone and screen (rubber-banded like in step 8) on top of the iOpener - had to be very careful to keep it balanced). The case-side strip pulled around the battery corner and snapped; the logic board-side strip snapped immediately.

I couldn’t get plastic cards or triangle wedges in far enough to get leverage; I carefully used two spudgers to pry up the bottom of the battery. From there I used tweezers to grab the edge of the logic-side adhesive. It took many tries to grab enough to continue to pull it, but once I had it, I got the whole strip out. Then my battery was loose enough to pry it up and off of the other strip with a plastic card.

It’s definitely easier to get the battery out if you can get the logic board-side strip out. The strips came out easier when I stopped pulling and grabbed the base instead of pulling from the end. I tried to keep the angle as flat as possible but there’s not much room.

This part ended up being really easy for me. I applied the suction cup just as the picture shows and pulled slowly almost straight up; the screen came off very easily and I didn’t even need to use a plastic prying tool. Not sure why it worked so well but I’m glad!