ZenSim eSIM Data Plans for Vietnam

ZenSim does not provide a truly unlimited high‑speed data eSIM for Vietnam. All of its Vietnamese plans have a fixed data allowance, the largest being 20 GB for 10 or 30 days or 10 GB for 10 days. The plans branded “Unlimited” only offer 3 GB per day and are capped; there is no further data available beyond this limit.

If you need more data, ZenSim offers fixed‑data alternatives. For example, the Vietnam 20 GB – 10 days plan provides 20 GB of high‑speed data for ten days, and the Vietnam 20 GB – 30 days plan offers the same amount for thirty days. These plans give a predictable amount of data without the daily cap, and may be more cost‑effective unless you require very high data usage.

ZenSim does not provide any Vietnam eSIM plans that include a phone number or SMS capability. The provider only offers data‑only eSIM plans for Vietnam. Travelers who need to communicate can use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection to make calls and send messages.

ZenSim offers eight single‑country plans and eight multi‑country plans that include Vietnam. The plans range in price from about $12 to $70 and carry data caps between 3 GB and 20 GB, with validity periods of 10 to 30 days. Within this selection, some plans provide a fixed data volume for the entire validity period while others impose a daily data cap that renews each day.