Is this EastESIM valid for other Southeast Asian countries like Laos or Myanmar?

The validity of your EastESIM depends on the specific plan you've purchased. If you have a single-country plan, for example, for Thailand, it will only work within Thailand's borders. Many adventurers enjoy exploring multiple countries in Southeast Asia, perhaps extending their journey from Thailand to Laos or Myanmar. For such multi-destination trips, we strongly recommend our EastESIM multi-country Asia regional plans. These plans are specifically designed to provide continuous data coverage across numerous East and Southeast Asian nations, ensuring you stay connected as you discover the diverse cultures and landscapes of the region without needing separate eSIMs.