The way Zoom is setup, you dialin and put in your personal attendee code. You still use the computer for video. From a UI perspective, it's no different from us

The way Zoom is setup, you dialin and put in your personal attendee code. You still use the computer for video. From a UI perspective, it's no different from using the computer to connect to audio. From a personal perspective, I prefer the phone for sound quality. I have poor hearing, especially when it comes to understanding speech. As such, I make sure to own a high quality phone with an excellent speaker-phone. The sound on the computer just doesn't compete, and it makes my experience a lot more difficult.