iFixit

If they are still in good shape, transfer the clips and EMI tape near the bottom of the LCD to your new LCD.

Remove the two T5 Torx screws securing the home button switch to the plastic display frame.

Remove the home button switch board from the front panel assembly.

If you are reusing your LCD, use the edge of a plastic opening tool to lift up a corner of the foam tape attached to the LCD.

Remove the tape from the perimeter of the glass face of the LCD.

Remove the piece of yellow tape securing the digitizer cable to the inner face of the front panel assembly, being careful not to rip the cable in the process.

Peel the protective sheeting off the inner face of the front panel assembly.

Be careful not to get any fingerprints or dust on the inner face of the front panel, as they will be annoyingly visible when the device is turned on.

Be sure the face of the LCD is perfectly clean before proceeding.

Stick the tape down along the long edge of the LCD to the frame of the front panel assembly.

Carefully lower the LCD down into its recess in the front panel frame, being sure it is properly positioned.

Hold back the strips of EMI tape along the lower edge of the LCD as you remove the two T5 Torx screws securing the retaining clips shown.

Stick the tape down against the new clips and reinstall the two T5 Torx screws.