Display Report in Portrait Mode

Hi,

I would like to show my report in portrait mode when people access it with their mobile devices.

I have tried the mobile view feature, which still has too much limitations in my opinion (for example, cannot change the grid size, and cannot overlay visuals), so I decided to re-size my canvas to the actual phone screen size and hoping it'd work - but it would still get shown in landscape view.

Is it possible to set the default orientation to portrait?

Thanks!