weav supports sharing of iPhone 7 and up using Control Center and Airplay.  The iPhone must be on the same network as your conference room computer hosting weav.   Weav does not support other screen sharing like Miracast or Chromecast.

1. From your home screen, swipe up or down to show the control center. 

2. Click on "Screen Mirroring".  The list of weav conference rooms will be displayed.  Click on the conference room you want to share.

3. You will now be sharing your screen on the weav host!

Click on this article  for more instructions on how to use weav

Please see this article for requirements and constraints on screen sharing