Use a suction cup to assist in lifting the screen while prying around its edges with a plastic spudger.

If necessary use a metal spudger to pry the screen up, taking care not to scratch the device.

Be careful not to pull the screen too far off. It will still be attached to the device by a cable for the front facing camera and the wide display data cable.

Reattaching the screen will require adhesive to ensure that it stays in place.