Start at a corner and pry the screen up with a plastic opening tool.

You can also use a plastic spudger for this task, but do not use metal tools. They can be dangerous to you and the device.

Slide the tool in the seam at the edge of the screen.

Wedge additional plastic opening tools in the seam to help lift the screen.

Slide both wedged plastic opening tools towards the bottom to pop the screen loose.

If your screen is cracked, work slowly to avoid flinging glass shards when prying.