Once the screen is warm to touch, apply a suction cup to the bottom edge of the phone.

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

Lift the screen with the suction handle to create a small gap between the screen and the frame.

Insert the tip of an iFlex in the gap between the midframe and the screen.