I don't know if using Twitter on a smartphone is a reasonable infosec strategy. More than a few Twitter accounts have been hacked or taken over with social engi

I don't know if using Twitter on a smartphone is a reasonable infosec strategy. More than a few Twitter accounts have been hacked or taken over with social engineering. And he's using a Samsung Android smartphone, so you don't know how up-to-date he is with security patches. But then again, according to Trump himself: “I know a lot about hacking." And he also knows “things that other people don’t know. And so they cannot be sure of the situation.” The man could be a brilliant hacker for all I know.