Lumbus does not provide a true unlimited data eSIM for Vietnam. The plans titled “Vietnam Unlimited” give high‑speed data at 3GB per day for a maximum of 30 days; once the daily allowance is reached, the speed is throttled to 1000kbps. No plan listed by Lumbus offers an uncapped data volume for high‑speed use.
Travelers looking for higher data volumes can instead select Lumbus fixed data plans. For example, the 50GB plan valid for 180 days or the 20GB plan valid for 30 days offer larger overall allowances and are typically more cost‑effective unless the user expects to consume data far beyond the daily limits.