If any of the adhesive strips broke off and the battery remains stuck to the rear case, remove it by adding a few drops of isopropyl alcohol (90% or greater) underneath the battery near the stuck strip(s).

After about a minute, gently lift the battery.

The battery should come free with minimal force. If not, add a little more isopropyl alcohol and try again. Do not bend or puncture the battery.

Be careful not to damage the ribbon cables or the wireless charging coil directly underneath the battery.

For an alternative method to unstick the battery, continue to the next step.