If you don't answer or decline the call within 21 seconds of starting the project, the call will go to voicemail. To answer, swipe/drag the center phone icon to the green phone icon that'll appear when you hold down the center phone icon. To decline, drag the center phone icon to either the red phone icon that'll appear when you hold down the center phone icon, or the message icon that'll appear when you hold down the center phone icon.
