While cutting through the adhesive, don't insert the opening pick more than 5 mm into the phone or you risk damaging the internal components.

Repeat the process of heating and cutting the adhesive along the three remaining sides of the rear cover.

You can insert each new opening pick in the gaps created by the opening picks left in each corner.

As you proceed, leave an opening pick in each corner to prevent the adhesive from re-sealing.

Slide an opening pick back and forth around the entire perimeter of the phone to release any missed adhesive. Reheat any stubborn adhesive.