RoameSIM eSIM Data Plans for Vietnam

RoameSIM does not provide a truly unlimited data eSIM for Vietnam. The plans that carry the word “Unlimited” in their name actually give 3GB of high‑speed data per day and reduce the speed to 1 Mbps after that daily limit is reached.

Travelers who need more data can choose RoameSIM’s fixed data plans, such as the 100GB plan valid for 180 days or the 50GB plans valid for 90, 7, 15, or 30 days. These plans offer a large, fixed amount of high‑speed data on 5G networks in Vietnam without a daily speed reduction, and they can be more cost‑effective for most users unless extremely heavy data consumption is expected.

RoameSIM does not provide Vietnam eSIM plans that include a phone number or SMS capability. Travelers can only purchase data‑only eSIMs from RoameSIM for use in Vietnam. If telephone calls or text messages are required, users can rely on VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, though some destinations may block or restrict access to particular apps, so travelers should confirm that the services they rely on are available in Vietnam before buying.

RoameSIM lists 12 single‑country plans and 23 multi‑country plans for travellers in Vietnam. Across these offerings the price ranges from about USD 4.69 to USD 182.81, the data allowance can be as low as 1 GB or as high as 100 GB, and the validity periods vary from 3 days to 365 days. Some plans use a fixed data cap, meaning a single total amount of data is available for the entire validity period, while other plans use a daily data cap, allocating a set amount of data each day rather than an overall lump sum.