Repeat the previous two steps for the left adhesive strip with the pull tab at the upper-left edge of the battery.

Prepare an iOpener or use a hair dryer to heat the rear case directly behind the battery. Once the case is just barely too hot to touch, use an opening pick or a spudger to carefully pry the battery out of the phone. Do not apply the iOpener or any other form of heat directly to the battery.

Apply some high-concentration isopropyl alcohol or adhesive remover along one edge of the battery and then tilt the phone so the liquid will run underneath the battery and weaken the adhesive. Wait a few minutes, then use an opening pick or a spudger to carefully pry the battery out of the phone.