Why use an eSIM in Iceland?
Almost everyone who visits Iceland drives, and the driving is the reason to sort out data before you go. The Ring Road runs past weather stations, closed mountain passes, single-lane bridges and gravel F-roads, and the two sites travellers live by, the road conditions map and the weather forecast, are only useful if your phone can reach them from the car park where you are deciding whether to continue.
Keflavík (KEF) is forty-five minutes from Reykjavík, which means the practical first hour is spent collecting a rental car, not queuing at a SIM counter. Petrol pumps in rural Iceland are unattended and card-operated, tours are confirmed by app, and lagoon bookings are timed to the half hour. An eSIM installed at home means the whole system is live before you reach the rental desk.

