ZenSim eSIM Data Plans for Vietnam

ZenSim does not provide an truly unlimited data eSIM for Vietnam. All plans that carry the word “Unlimited” in their names actually offer a capped allowance of 3 GB per day, after which the high‑speed data stops. Because the data cap is applied, these are not unlimited in the sense of continuous high‑speed data.

Travelers who need more data can choose from ZenSim’s fixed‑data plans, such as the 40 GB validity‑30‑days plan priced at $49.00 USD or the 20 GB options for 15 or 30 days, which give significantly higher overall data allowances and may be more cost‑effective for heavy data users.

ZenSim does not offer any eSIM plans for Vietnam that include a phone number or SMS capability. The provider only supplies data‑only eSIM plans in this country.

Travelers can still make voice or text communications by using VoIP services such as WhatsApp, Telegram, or iMessage over the data connection, but some destinations may block or restrict these apps. It is recommended that travelers verify that the VoIP applications they plan to use are accessible in Vietnam before purchasing a ZenSim eSIM.

ZenSim offers 13 single‑country data plans for Vietnam and an equal number of multi‑country plans that include Vietnam in their coverage. The available plans span a price range from about $4.00 to $70.00 and a data cap range from 1 GB to 40 GB. Some plans feature a fixed data amount for the entire validity period, while others impose a daily data cap, limiting the amount of data that can be used each day. This variety allows users to choose between a straightforward data allotment or a plan that restricts daily usage.