Use the plastic opening tool to gently pry the battery up, only at the outside edge of the phone. Prying anywhere else, especially near the logic board, may result in damage to the logic board.

If the battery doesn't pry easily out of the case, apply a few more drops of isopropyl alcohol.

Pry gently and evenly to avoid deforming the battery. A bent battery can be a fire hazard.

Do not pry at the top portion of the battery, you risk severing the volume control cables.