Carefully place a suction cup halfway up the heated side.

Be sure the cup is completely flat on the screen to get a tight seal.

While holding the iPad down with one hand, pull up on the suction cup to slightly separate the front panel glass from from the rear case.

If your iPad's screen is badly cracked, covering it with a smooth layer of clear packing tape may help the suction cup adhere. Alternatively, use a strong piece of tape (such as duct tape) and fold it into a handle.