The battery has a jacket that can double as a battery removal tab, pull it to remove the battery. If that doesn't work, follow the instructions below.

Carefully wedge an opening pick underneath the battery to break the adhesive.

If the battery does not come out easily, don't pry aggressively. Apply heat to the back of the phone with an iOpener or a heat gun to loosen the adhesive.

Try your best not to deform the battery during this process. Soft-shell lithium-ion batteries can leak dangerous chemicals, catch fire, or even explode if damaged. Do not use excessive force or pry at the battery with metal tools.

Do not reuse the battery after it has been removed, as doing so is a potential safety hazard. Replace it with a new battery.