[mvid]

If I land in Thailand, how fast is the Hallon service? What about Brazil, South Africa, Russia or Australia?

Their are cheaper plans within the USA for domestic data usage, if that is all you want. That’s not the point of Fi though

[Nullabillity]

The speed will be fine, but it'll be pretty expensive outside the EU.

But that's hardly a problem anyway since getting a local SIM pays off quickly, Fi or not.