Remove the two pentalobe screws at the bottom edge of the phone. Heat with the Hot Air Gun along edges of the screen evenly for 1 minute to soften up the waterproof seals.
Press the suction cup firmly onto the screen. Hold the phone with one hand and pull the ring-pull of the suction cup with the other hand.
When the screen is lifted, there should be a tiny gap. Insert a plastic pry piece into the gap to get it stuck in the middle. Insert a new pry piece into the gap and slide along edges of the screen to free the screen from the rear housing.