Press the Esc key to open your menu, and then select the microphone icon on the side menu.
Press the M key to toggle your microphone on and off.
Click the microphone icon in the upper-right corner of the screen.
Microphone controls on Android phones and tablets, iPhones, and iPads
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.
