3.4.3 Set the Mute
During calls, press Option and select Mute or Unmute .
If you select Mute , the word "Mute" will appear on the screen, and the
other side couldn't hear your voice.
If you select Unmute , you will exit from Mute , and the other side could
hear your voice again.
3.4.4 Switch the Sound
During calls, you could receive the call either from the speaker or from the
earpiece.
During calls, press Option and select To Speaker or To Earpiece .
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