There's a small gap in the midframe beneath the battery, next to the display connector. Avoid applying adhesive remover in the bottom right corner of the battery to prevent the adhesive remover from loosening the display adhesive.

If you're using adhesive remover, follow these preparation steps first.

Lift the right edge of the phone assembly and tilt the phone at a 45° angle.

Apply a few drops of adhesive remover or high-concentration (90% or higher) isopropyl alcohol into the gap at the bottom edge of the battery. Let the adhesive remover run down to the left edge of the battery but avoid the right edge.

Tilt your phone in the direction of the rear facing camera to spread the adhesive remover beneath the battery.

Let the adhesive remover penetrate the battery adhesive for at least 1 minute.