To adjust the volume level, use the cellular phone's volume controls while you're on an active call. The Jawbone ICON will remember the volume level until you change it again. There is no volume button on the headset.
IF THE CUSTOMER IS USING IN A2DP MODE THE TALK BUTTON WILL WORK TO RAISE AND LOWER THE VOLUME. PRESS AND HOLD TALK AND IT’LL CYCLE THROUGH IT’S VOLUME