Just like the phone layout view in Power BI Desktop described in Chapter 5, Creating and Formatting Power BI Reports, the Power BI service provides a phone view to customize a mobile-optimized layout for dashboards. With a phone view configured for a dashboard, the specific tiles, sizes, and order of tiles defined for the phone view will be presented to the user when the dashboard is accessed via the Power BI mobile app on their phone. 

The Phone view can be accessed via the drop-down menu of Web view in the top-right corner of the dashboard, per the following image:

Once in Phone view, the same drag and resize options available in phone layout for Power BI Desktop are also available for the dashboard. In the following example, the three most important total net sales KPI visuals from the Global Sales dashboard have been positioned at the top of the phone view (Global, North America, Europe) and several less important tiles have been unpinned:

Power BI saves the phone layout automatically and the defined Phone view will be the new default view for phones accessing the dashboard. However, the user can still turn their phone sideways to view the dashboard in the standard web view. 

The subtitles applied to the dashboard tiles are particularly valuable in Phone view. In the standard web view, the four supporting tiles with custom images (Global, North America, Europe, Pacific) make it easy to determine the scope of each tile. These image tiles are likely not, however, desired in Phone view and thus the subtitles can be relied on to convey the scope of each tile.