This step shows how to install a replacement microphone gasket. If your kit didn't come with this gasket, skip this step.

Use tweezers to remove the old microphone gasket. It may be attached to the back cover or the phone.

Remove the clear liner from the large L-shaped adhesive piece.

Place the square piece of adhesive over the back cover's microphone cutout under the flash unit, with the blue liner tab facing right.

Remove the blue liner.