As suggested in an issue filed against gnome-software, it would be slightly useful if screenshots in a metainfo file could have an attribute which indicates whether they’re of the full-size application, or of its smaller mobile UI.

If that information was present, we could prioritise showing the screenshots of the mobile version of an app, when gnome-software is running on a mobile device.

We can’t reliably work this out from the existing screenshot metadata, as smaller (pixel-wise) screenshots might be of dialogues or things which aren’t the main window in mobile mode.

This would only be useful for adaptive apps, and people can always scroll through the screenshots to find mobile ones, so it’s not a particularly urgent feature request.