nextSIM does not offer a truly unlimited data eSIM plan for Thailand.
All plans listed provide a fixed data allowance, most commonly 1GB per day, and after a day’s allocation is reached the speed is reduced to 512kbps or 2000kbps.
Even plans named “Unlimited” contain this data cap, so the term “Unlimited” refers only to the name of the plan, not to unlimited high‑speed data.
Travelers who need more data may choose a fixed‑data alternative.
For example, nextSIM sells a 100GB plan valid for 30 days at $116.84 USD, and several 50GB plans for 30 days priced between $40.68 USD and $49.74 USD.
These plans offer a set amount of high‑speed data without the throttling that occurs on the “Unlimited” plans.
Choosing a fixed‑data plan can be more cost‑effective for users who need consistent data usage during their stay in Thailand.