Convenient Function 42 Function Touch sensor gesture L R Calls Answer call Single tap during incoming call Single tap during incoming call Decrease volume Double tap - Increase volume Triple tap - Mute your voice - Double tap during a call Unmute - Double tap during mute Switch the noise level from the other party*1 - Triple tap during a call Reject call Tap and hold for about 2 seconds during incoming call Tap and hold for about 2 seconds during incoming call End call Tap and hold for about 2 seconds during a call Tap and hold for about 2 seconds during a call Switch external sound control - Tap and hold for about 2 seconds