[Hiccup has so many questions already about the muggle world ("If there's a person on those lights, why aren't they moving around?" and "Does the crossing really have a zebra in it?"), but Jack can answer all of them later. At the moment he's simply drinking in the sights, like any tourist in the great town of London.

He does notice when Jack pays attention to his rambling, but it's the offer that makes him look at his boyfriend with a bit of a bewildered look on his face. He does understand the need to get away from home. That's why Hogwarts is such a refuge for the two of them - they had that conversation just before the train home.]

Well...you'd have to teach me how to use it. I'm not entirely sure how much I'd get. [He weighed Jack's phone in his hand, looking down at the tiny thing.] For something this small to accomplish everything an owl can do and more...muggles truly are remarkable inventors.