If your screen 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 broken screen.

Apply a suction handle to the top left edge of the screen.

Pull up on the suction handle with firm, constant pressure to create a gap just small enough to insert an opening pick.

Only create a gap small enough to insert an opening pick. Overbending the screen will damage it.

Insert the tip of an opening pick into the gap.

Don't insert the opening pick more than 3 mm or you'll damage the display edges.

Leave the pick in to prevent the adhesive from re-sealing.