Viasimo does not provide a truly unlimited data eSIM for Thailand. All of Viasimo’s Thailand plans have a hard data cap: the Thailand eSIM, Unlimited, 3‑day plan offers 3GB per day, the Asia eSIM, Unlimited, 3‑day plan provides 2GB per day, and the Singapore‑Malaysia‑Thailand eSIM, Unlimited, 3‑day plan also gives 2GB per day. After the daily allowance is used, the network speed is throttled to a low rate.
Travelers who need more data can choose one of Viasimo’s fixed data plans, such as the Thailand eSIM, 50 GB, 10‑day plan or the Thailand eSIM, 50 GB, 30‑day plan. These plans provide a set amount of high‑speed data that must be used within the specified validity period and can be more cost‑effective than purchasing a daily unlimited‑named plan when heavy data usage is expected.