As the adhesive loosens, pry up an edge of the screen with a plastic opening tool or an opening pick. A suction cup may also be useful here.

Use an opening pick to hold that edge in place and continue this process around the entire screen, applying more heat as necessary.

Avoid damaging the LCD screen connector while prying along the screen edges. It is located on the left edge of the phone, across from the volume controls.

During reassembly, new adhesive may need to be applied over the old adhesive to properly secure the screen.