Is this SouthESIM for South Korea also valid for neighboring countries like Japan or Taiwan?

This is a key question for multi-country adventurers! Your specific SouthESIM plan for South Korea is valid only within South Korea. If your itinerary includes flying from Seoul (ICN) to, say, Tokyo (NRT) or Taipei (TPE), your connection will pause. For seamless travel across multiple Asian destinations, we highly recommend exploring our fantastic multi-country or regional eSIM bundles. They're designed to keep you connected across borders, making your grand tour even smoother!