You can participate in webinars from almost any device, as long as you have a (stable) internet connection. 
Recommendation The most optimal way to follow a webinar is from a desktop or laptop computer with the 
Google Chrome browser. 
Supported devices and browsers  - Chrome 81 and above (Including Chromium-based browsers such as Brave and Opera)
  - Microsoft Edge 81 and above
  - Safari 12.1 and above
  - Firefox 78 ESR and above
  - Android 5.0 and above with current security and platform updates
  - iOS 12.1 and above
  
Click 
here to see which browser and version you are currently using and click 
here to download Google Chrome if needed.