Is this SouthESIM plan valid for neighboring countries like Myanmar or Laos?

The validity of your SouthESIM plan depends entirely on whether it's a single-country plan (e.g., just for Vietnam) or one of our convenient regional bundles. If you've chosen a plan specifically for Vietnam, it won't automatically extend to neighboring countries like Laos or Cambodia. Crossing borders, say from Sapa into Laos, would mean your connection would cease. For seamless travel across multiple Southeast Asian gems, we highly recommend checking out our regional eSIM options – they're perfect for an adventure!