When in a Zoom meeting using your iPhone or mobile device. From the meeting window you can "swipe-right" to enter "Safe Driving Mode"
To enter Safe driving mode "swipe right" on your meeting screen. To exit and go back to your normal meeting window, "swipe left"
In this mode, your microphone and video will be automatically stopped and muted. To talk, you will need to tap the "Tap to speak" icon.
You can choose to switch from your phones microphone or speaker.