Cut a strip of 1 mm wide double-sided tape to be about 3 cm long (1.25 inches).

Lay the adhesive strip along the upper edge of the earpiece speaker slot in your new display so that it's centered over the slot and touching the upper edge.

Gently press the adhesive strip into place on the display with your finger or a spudger.

Repeat this step to apply a second, identical adhesive strip along the bottom edge of the speaker slot.

Peel the white backing away from both adhesive strips.