Adobe Analytics has a built-in segment, "Visits from Mobile Devices", defined as Visit where Mobile Device exists.
AA also has a built-in segment, "Visits from Non-Mobile Devices", defined as excluding Visit where Mobile Device Type = "Mobile Phone" or Mobile Device Type = "Tablet".
The problem with the "Visits from Mobile Devices" segment is that Smart TVs are also considered Mobile Devices, but not Mobile Phones nor Tablets. This table illustrates the contradiction:
This is counter-intuitive. Any user who does not inspect the values behind the definitions will be left wondering why a device can be both a Mobile Device and a Non-Mobile Device, as illustrated by this Venn diagram:
DO NOT categorise Smart TVs as Mobile Devices. Or rather, ensure that Mobile Devices really refer to what are commonly known as "mobile devices", i.e. phones and tablets and any other portable IoT device. Smart TVs aren't considered mobile devices generally.
If the above solution cannot be used because of what it means to be a Mobile Device, then change the name of "Visits from Non-Mobile Devices" to "Visits from Non-Phones/Tablets".