A classic example of the kind of thing I mean is where phone helpline work has been exported to places on the other side of the world - but the people answering the phone have to pretend they are local, with appropriate accents, and gossip about sport or weather and so forth, to make it more convincing - because people don't feel that advice about local trains, from someone in another continent, is going to be reliable.

That's just the kind of thing that a good science-fiction writer, anticipating the kind of technology that allows that sort of thing might have made a point of using as a plot device, and as a way of reminding readers that the world in the story had changed. (For example you'd have the phone conversation that left you assumning the hero was in England, and then something would be dropped in to that reveal he was in fact in Bangalore.