ZenSim eSIM Data Plans for Vietnam

ZenSim does not provide a truly unlimited data eSIM for Vietnam. The plans that carry “Unlimited” in their names actually offer a capped data allowance of 3GB per day. When that daily cap is reached, the plan may slow to a reduced speed (though the specific throttled rate is not listed).

If a traveler prefers a fixed high‑capacity option, ZenSim offers several large‑data packages. For example, a 40GB plan valid for 30 days costs $49 USD, while a 20GB plan valid for 10 days is $27 USD and another 20GB plan for 30 days is $28 USD. These options give higher data limits and can be more cost‑effective unless the user requires continuous high‑speed data without limits.

ZenSim does not offer any eSIM plans for Vietnam that include a phone number or SMS capability. Only data‑only eSIMs are available.

Travelers can use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection for calls and messaging, as these services do not require a local phone number or SMS feature.

ZenSim provides nine single‑country plans and nine multi‑country plans for travelers in Vietnam. The offerings include both fixed‑data packages and daily‑cap options, with prices ranging from roughly USD12 to USD70, data amounts between 3 GB and 40 GB, and validity periods from 10 to 30 days.