Please, if you are 50+ like I am: Have a good loupe, bright light to see and enlarging glass, and good, I used #5-type, forceps for the very tiny screws. - The exchange took us an hour. Excellent descriptions found herein! Thank you!
No plastic did work. Not stiff enough. We used a metal spatula with round edges and some metal piece at outmost care not to puncture the battery. Uh….. Apple could make this user friendly!
It felt like the strips pulled out completely, in fact, there was a full layer underneath. When we levered the battery out later, we used a hairdryer from underneath, and during the “heating” (gentle! only lowest setting!) you could lever the battery with a metal piece (I was very careful not to hurt the battery. So we got the battery out with some force appied and slowest movement away from the very sticky wihte stripes… I think, even if you do all according to the manual, be prepared for a hairdryer use from underneath.
We found the opening was not exactly easy to 90°, finally it did open completely. Be careful on the last degrees, the cables may pull little bit on the metal piece you are about to unmount in the next step. No worries, all worked fine. Just - be gentle with the cables when opening.
Tood works good. ATTN: Be not surprised, if you increase slowly the force on the levers, your display “snaps” out of its shell. This is ok, just do not get startled. You immediately see the cable of the home button. All good. Remain calm. (Me, 50 yrs, the dude repairing first time.)