Organization Level:
Navigate to Settings > Organization > Webinar.
Look for the Join from Mobile Browser option and check the box to allow this feature. Enabling this will permit all webinar attendees to join using popular mobile browsers like Chrome, Firefox, Ulaa, and Safari.
User Level:
Go to Settings > My Settings > Webinar
Look for the Join from Mobile Browser option and check the box to allow this feature. Enabling this will permit all webinar attendees to join using popular mobile browsers like Chrome, Firefox, Ulaa, and Safari.

It is supported in the following versions: Chrome/Ulaa (86 and above), Safari (15 and above), and Firefox (117 and above) for browsers. For devices, it supports Android (Version 10 and above), iOS (Version 13.0 and above), and iPadOS (Version 10.15 and above).