The steps are same as removing the back cover but a bit more difficult. Heat up for 3 minutes, lift the screen with the suction cup and if necessary, cut through the adhesive.

When removing the screen, be careful: the earpiece is stuck to it. Don't lose it.

If your screen is cracked or broken, be careful when removing as bits of glass may come off and cut your fingers.

Why does the disassembled screen come with the earpiece? The reason is that the earpiece is stuck in place on the touch panel/screen combination directly, rather than kept in a frame on the main flex (like the cameras, for instance).