George - Multi View provides you with the option to view different two different types of content side-by-side. For example, you can view media from different sources, such as an app, Blu-ray player, or game console, on the main left screen, while also mirroring your phone to the smaller screen. Multi View provides you with different possibilities for splitting screens and viewing several types of content at the same time. On the left screen: You can play Samsung TV Plus, TV apps, HDMI devices, Antenna or Cable, or USB devices. On the right screen: You can screen mirror, use AirPlay, cast from an app, or cast from an IoT camera. 2 HDMI inputs cannot be viewed at the same time.
~ Samsung Specialist