What does this have to do with smartphones and the internet? The internet is a means of gathering information first, and a form of communication second. I don’t get what socialization has to do with the first one. If you want people to be comfortable communicating on the internet (or via phone or whatever) then presumably they need to start earlier.
As for people struggling with phones, that’s because a) lots of people here are autistic, and b) voice phones are not an ideal form of communication anyway. Either way the answer is practice, not shying away from the problem.