NextSIM does not offer a truly unlimited data eSIM for Vietnam. All plans that carry “Unlimited” in their name actually provide a fixed amount of high‑speed data and then throttle the speed once that amount is reached; for example, the eSIM Vietnam Unlimited 30Days Standard plan gives 1 GB per day and the eSIM Vietnam Unlimited Plus 30Days Standard plan gives 2 GB per day.
If a higher data allowance is needed, nextSIM provides fixed‑data plans such as the eSIM Vietnam 100GB 30Days Standard plan and various 50 GB plans that last 30, 60, or 90 days. These plans give a larger total data cap without the daily ceiling of the “Unlimited” plans. Selecting one of these fixed‑data options can be more cost effective for users who expect to use more than 1–2 GB per day.