Turning you microphone on and off
To mute and unmute your microphone, see the appropriate instructions for your device.
If you use headphones with your device, tap the microphone icon in the upper-right corner of the screen to toggle the microphone on and off.
If you don't use headphones, you can't leave your microphone turned on because it may create audio feedback. Instead, you use push-to-talk (PTT). Press the microphone icon when you want to talk, and then release it to mute the microphone again.