Squeeze the tweezer tips together and insert the point underneath the volume button board's contact pad near the top right edge of the frame.

Pry upwards to loosen the contact pad from the frame.

Remove the volume buttons.

To install the volume button board onto a used frame, cut a small piece of adhesive from the pre-cut adhesive card or a roll of Tesa tape, and use it to stick the volume button board back onto the frame.

To install the volume button board onto a new replacement frame, peel the blue liner on the right edge of the frame to expose the adhesive. Then, stick the board onto the edge of the frame.