Is this EastESIM valid for neighboring countries like Laos, Cambodia, or Myanmar?

This specific EastESIM plan is valid only within the country it's designated for (e.g., Thailand). This is a crucial distinction for multi-country itineraries. If you're traveling from Thailand to a neighboring country like Laos, Cambodia, or Myanmar, your connection will cease at the border. For a seamless experience across multiple destinations in Southeast Asia, EastESIM offers specialized multi-country Asia plans. These plans are designed to provide continuous connectivity across several nations, saving you the hassle of purchasing a new eSIM for each border crossing and ensuring you're always connected.