I guess it's a good test for something, but I wouldn't call that something "phone addiction". I think wanting to be reachable by friends and family is fine and "addiction" starts when you start compulsively
using your phone, like if you're scrolling through [insert social media here].
And phones are much more than content consumption machines - I like having a little pocket camera with me in case a see a new cat in the neighbourhood or something, and looking up bus schedules, renting city bikes, calling a cab, etc. are things I all but need to be able to do when I'm out.
My trick to almost never looking at my phone has been, somewhat ironically, having a smartwatch, as well as carefully curating the notifications I get on my phone. If I know I can't miss an important notification, I'll never even look at my phone, so there's no chance I even see one of those time wasting apps. And when a notification buzzes on my wrist, I can see in a fraction of a second if it's something really important or if it can wait.