ETravelSim does not currently offer any unlimited data eSIM plans for Vietnam. The available options are fixed‑data plans, such as the 100GB plan valid for 20 days, the 50GB plan valid for 30 days, and the 25GB plan valid for 30 days. These plans can be purchased individually or as part of multi‑country packages that include coverage in Vietnam.
Choosing a fixed data plan may be more cost‑effective for most travelers unless they are very heavy data users who would prefer a truly unlimited offer. The 100GB plan, for example, provides a large data allowance for a relatively short period, while the 50GB or 25GB plans offer fewer data but longer validity periods, allowing users to balance cost and usage according to their needs.