If I purchase a WorldESIM plan for South Korea, will it also be valid in neighboring countries like Japan or Taiwan?

A WorldESIM plan specifically for South Korea provides coverage exclusively within its borders. If your Asia itinerary includes onward travel from Seoul (ICN) to destinations like Tokyo (NRT) or Taipei (TPE), your South Korea-specific connection will cease. For multi-country journeys across Asia, WorldESIM highly recommends our dedicated Asia Regional eSIM or a custom multi-country bundle. These global roaming options ensure seamless, uninterrupted connectivity as you explore diverse destinations like Japan, Taiwan, and beyond, all under a single, convenient eSIM plan.