As someone who has changed hundreds of iphone batteries, the adhesive sucks. At least they changed to a different adhesive around iphone 8 because alcohol does wonders on it. I don’t even attempt to pull the tabs on those anymore.
May I ask how you do that? Do you just…douse the battery in alcohol? There isn’t much of a gap between the adhesive and the battery in my experience, so it just sits inside the chasis and rolls around. I haven’t had any luck with that but I’m probably doing it wrong.
I drizzle some in the corner and then use a sturdy tool to gently pry up on the battery to allow the alcohol to get deeper under. Since the adhesive patches are small to fit around the wireless charging coil, it doesn’t take much. Once you get one side of the battery loose the other will easily come with it, especially if the alcohol got to them.
