ZenSim eSIM Data Plans for Vietnam

ZenSim does not provide a true unlimited‑data eSIM for Vietnam. All plans with “Unlimited” in their name give a fixed daily allowance of 3 GB, after which the speed drops to 1000 kbps. If a traveler needs a larger pool of high‑speed data, ZenSim offers fixed data plans such as 40 GB for 30 days or 20 GB for 15 days, which can be more economical for users who consume a lot of data.

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 provides 13 single‑country data plans and 18 multi‑country plans that include Vietnam. The available plans span a price range from $4.00 to $119.00 and offer data caps between 1 GB and 40 GB. Some plans are fixed‑data‑amount packages, giving a set amount of data for the validity period, while others are daily‑data‑cap plans that allow a specified amount of data each day. This mix gives travelers flexibility depending on how they intend to use data during their stay.