It was interesting to me because of how ordinary it was. I just assumed the user would be doing this from a regular computer, and that the police tracked down the IP. Not that the suspected troll would be dumb enough to use his own phone number to register for Twitter. And be someone who is "Clever" enough to use a pre-paid account but then dumb enough to sync data to iCloud. But I guess it's easy to erroneously conflate Apple's device security with iCloud security.