The Home Assistant website has an example on a phone. How does one get that design? Is there a tutorial somewhere? That look doesn’t seem to be the default.
That looks like the default theme to me using the newer section layout and tiles. You don’t say anything about what version of HA you are running, what mobile device, or anything else, so everything else after this is just a wild ass guess on my part and pretty generic.
Make sure you’re on the current version of Home Assistant. Make sure you’re on the current version of the mobile app. In your mobile app settings, make sure you’re using the Home Assistant theme. If you haven’t yet, convert one of your old layouts to sections and start using the newer widgets.