Kurt “CyberGuy" Knutsson reveals how iPhone’s new Automatic Mic Mode adjusts settings for optimal call quality automatically.

Whether you're having issues with the built-in microphone or one connected externally, there can be several reasons for it.

Launch the app once installed ... When done, these hotkeys will work as global shortcuts to toggle the microphone state (On or OFF). You can select from multiple alert sounds for muting/unmuting ...

The clever feature shows when apps are accessing things like your camera or microphone. You'll find that it's usually fine: Instagram will need access to your camera often, for instance.