I think the 'mobile phone' form factor is the import point here. When I use a desktop or laptop computer, it's at least somewhat more intentional. But pulling o

I think the 'mobile phone' form factor is the import point here. When I use a desktop or laptop computer, it's at least somewhat more intentional. But pulling out your phone is something you can do anywhere. So the ways in which it changes how your attention works are probably different.