QuickTip – When receiving an incoming call, you can quickly press the power button (that is the button on the top of your device) once to mute the ringing. Or, when receiving an incoming call, you can quickly press the power button twice and send the call straight to voicemail!
Just a quick, easy way to manage incoming phone calls. I guess Doug uses this option all the time. I personally tap the volume control button to mute an incoming calls. Who knew the iPhone was so multifaceted! :)
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