Pull up on the suction cup with firm, constant pressure to create a slight gap between the front panel and rear case.

Take your time and apply firm, constant force. The display assembly is a much tighter fit than most devices and is held down with adhesive.

Pulling too hard may damage the display assembly. Apply just enough pressure to create a small gap between the display assembly and the rear case.

If you have any trouble, heat the front of the iPhone using an iOpener, hair dryer, or heat gun until it's slightly too hot to touch. This will help soften the adhesive securing the edges of the display.