The adhesive securing the rear glass is strong, and creating a gap requires significant force. If you're having trouble, apply more heat and try again.

If your rear glass is badly cracked, covering it with a layer of clear packing tape may allow the suction handle to adhere. Alternatively, very strong tape may be used instead of the suction handle. If all else fails, you can superglue the suction handle to the broken rear glass.

Apply a suction handle to the center of the rear glass's bottom edge, as close to the edge as possible.

Pull up on the suction handle with strong, steady force to create a gap between the rear glass and frame.

Insert an opening pick where the charging port is located.