How to disable mobile access to self-hosted Jitsi

I need to configure a Jitsi instance where mobile participants aren’t wanted. They only want people that sits in front of a computer, this is by using WebRTC capable browser.

How can I tune this?

You can use nginx to ban mobile user agents.

Try setting MOBILE_APP_PROMO: false,
in the file usr/share/jitsi-meet/interface-config.js

I think this will not allow the usage of mobile devices.