He very famously does not know how to use computers and can only basically manage tweeting from his phone, which he is mostly not, actually, doing himself.

Now, there are two or three terminally online people around him. I would be more quick to accuse his foul-mouthed spokesman but it’s admittedly because I hate that guy. But perhaps it could be the printer lady, or the unblinking former golf caddy guy, who are both around to help with the, er, modern day presidential communications.