Issue: When playing on iOS, the microphone activity icon should be remain on screen regardless if using touch or controller (or mouse and keyboard, apparently it “works”). There is currently no indicator as to whether or not your mic is muted/unmuted when using an external input such as a controller unlike the PC/standalone VR version.
Potential solution: Have the same microphone icon used in the PC/standalone VR version in the corner when using an external form of control (or a non-touch input control). Another suggestion is to additionally add the microphone mute/unmute/PTT sound to indicate the currently toggled state of the microphone.