"when the adhesive strips are broken , you can try using fishing line to remove the adhesive from under the battery - https://www.youtube.com/watch?v=gkCyl7kR...
also this method using steel wire seems even better - https://www.youtube.com/watch?v=W5GzU11q..."
Don't heat up adhesive tabs used to hold down batteries of iPhone 5s, 6 Etc. These are command strips from 3m and become brittle when heated. If you break them off gently pry up on battery using plastic pry tool or isesamo. Be extremely careful not to puncture battery. I get the battery up enough to use curved tweezers and grab a hold of that command strip and pull directly away from itself.
"I did two battery replacements back to back, and on the second I used the black spudger as a spool, basically: # NOT cutting the tabs in 2
laying the spudger across the frame with the edge over the battery's bottom edge and pulling the tabs over itSlowly rolling the spudger towards the home button, keeping the angle of tape more or less vertical from the battery's edge.
On side of the tape broke early on because i misunderstood ifixit's directions and was pulling the tape forward at an angle over the home button hardware. I can't say for certain this method would work consistently but I was surprised how well it did- certainly better than pulling and re-gripping separate tabs."
