It is currently not possible to follow a presentation on the mobile app (and neither on a mobile browser). When the board editor starts the presentation mode, all desktop users receive the popup inviting them to follow the presentation, but not mobile users. Also, facilitation tools are not supported either on mobile app/browser, so it is not possible to use the usual facilitation techniques of dot voting etc.
This is a kind of dealbreaker to teachers giving lectures on Miro, as teaching a class usually involves starting a presentation with slides on the subject material, expecting students to follow it, and then adding some facilitation such as polling on top of the presentation. To my own total surprise I recently learned from teachers, that many students in our institution seem to attend classes with a mobile device only, and not use laptops as we have just assumed thus far (perhaps a generational isssue, into which we’ll definitely be looking deeper, but for now this is what we have observed).