that’s not necessarily what it means. some things legitimately are easier to explain in person. ever try working out a complicated mathematical argument in an email? one can do it, but it’s not pretty. in person you can write on paper, draw figures, etc., synchronously with your compatriot observing and even participating. it’s not merely a change of medium from text to sound.
primary difference between a computer and a phone in this regard is that old comouters can perfectly well run modern Linux. with a phone, you’re lucky to have root at all so good luck updating it yourself.