One of the most avoidable Japan travel problems happens before the trip even starts: a traveler purchases a Japan eSIM plan, scans the QR code at the airport, and the activation fails — not because of anything wrong with the plan, not because of a network issue, but because their phone was never unlocked in
Before you book your Japan eSIM, there’s one question that needs an answer: does your iPhone actually support it? It sounds like a simple yes or no, but iPhone eSIM compatibility for Japan travel has more layers than most travelers expect. Region-specific hardware variants, carrier locks, iOS version requirements, and the shift to eSIM-only models