Grasp one of the battery adhesive tabs with your fingers and slowly pull it away from the battery, towards the bottom of the phone.

Pull steadily, maintaining constant tension on the strip until it slips out from between the battery and the midframe. For best results, pull the strip at as low an angle as possible, without snagging it on any other components.

If the battery adhesive tabs break during the removal process, use your fingers or blunt tweezers to retrieve the remaining length of adhesive, and continue pulling.