[Well, that sure answers that question. Tsuzuki sits back on his heels, brushes the dirt off his hands and pulls his phone out of his pocket, displaying it.]

This thing. They've made them really small! You can call other people -- uh, I mean, it lets you talk to anybody else who has one, as long as you know their phone number, and you can use it to write and read what other people write, too.

[Explaining the Internet is also really hard.]