Phone “addiction” is filled with far too much unrewarding wandering: rather than doing “nothing,” you might as well do “something,” so you scroll and click to pass time.
TV “addiction” is far more dangerous because there is such an abundance of content that’s richly rewarding, that’s truly more pleasurable than so much of “real life.” How does anyone ever sleep with so much good stuff to watch?
Though I guess “abundance” is quite subjective. If you spend enough time in either “addiction,” you reach the same point of unrewarding wandering. Worse still, there may well be a terrible price for extended trips into the passivity that’s endemic into screen consumption: you lose your own creativity.