Secure a suction handle to the lower edge of the rear glass, as close to the edge as possible.

If the phone's rear glass is cracked, the suction cup may not stick. Try lifting it with strong tape, or superglue the suction cup in place and allow it to cure so you can proceed.

Lift the rear glass with the suction cup to create a gap between the glass and the frame.

Insert an opening pick into the gap.

Don't attempt to insert a pick between the back glass and the frame before creating a gap. The glass is covered with foil from the inside, and by not creating a gap, you risk inserting the pick between the glass and the foil instead, which would permanently damage the foil and ruin the solid color of the back panel.

If you have trouble, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.