If your replacement screen did not come with an earpiece speaker grille, you will have to transfer it from your original screen.

The earpiece speaker grille consists of two small mesh pieces. Be careful not to lose them as you transfer them over.

Use the flat edge of a spudger to push the grille from the front side of the screen to loosen it from its recess.

Remove the grille.

Use some thin strips of Tesa tape to affix the grille to the replacement screen.