From an initial analysis, I think the scalability would be doable if we offered the ability to specify how many tiles wide a dashboard is as an alternative to specifying how big the tile is (in px) as is done today.
I just drafted the feature request here, so be sure to go cast your vote:
In the meantime, what kind of devices are you viewing things on? For phones that are a similar size, you may be able to use a custom tile size that is roughly between the screen size of each phone which will get the tiles to scale at the same size on both phones.
On tablets, if you’re using something like Fully Kiosk Browser, you use the adjust the Web Zoom and Scaling to get the tablets to fit the same dashboard across different sized screens.
From within Fully Kiosk Browser…
- Swipe out the left navigation drawer and select Settings
- Choose Web Zoom and Scaling
- Uncheck ‘Use Wide Viewport’
- Change the Initial Scale to your desired value (eg. 125)
Note : 150% should be close to the default so something like a value of 125 would fit more tiles onto the screen. - Return to your dashboard and observe the results - adjust further as needed