One of the Samsung Galaxy Z Flip's defining characteristics is its ability to split the tall 22:9 aspect ratio main display in two halves to show different types of content. The feature which Samsung calls "Flex mode" will make its way to more OEMs in the near future according to an official statement from Google. Samsung and Google worked together on the development of Flex mode for the Galaxy Z Flip, which is triggered when the screen is opened at a 90-degree angle. For most use cases, you'll see content on the top half and controls on the lower part of the screen. Some examples...
Source: https://www.gsmarena.com/galaxy_flips_splitscreen_interface_will_make_its_way_to_more_oems_soon_as_per_google-news-41498.php
