4S eSIM eSIM Data Plans for Vietnam

4S eSIM does not provide a truly unlimited high‑speed data plan for Vietnam. The plans titled “Unlimited” actually give a daily allowance of either 3 GB or 5 GB for the validity period, after which the speed is reduced to 1000 kbps. Travelers who need broader or continuous data can choose from fixed‑data options that 4S eSIM offers; for example, a 50 GB plan valid for 180 days or a 40 GB plan valid for 365 days. These fixed plans may be more cost‑effective for heavy data use, while the “Unlimited” plans suit lighter usage with a throttled speed once the daily quota is reached.

4S eSIM does not provide eSIM plans for Vietnam that include a phone number or SMS capability. The only eSIMs available from 4S eSIM for Vietnam are data‑only, so travelers cannot place or receive traditional phone calls or SMS. However, internet‑based messaging and calling apps such as WhatsApp, Telegram and iMessage work over the data connection and can be used for calls and messaging without a phone number or SMS capability.

4S eSIM lists 39 single‑country data plans that are valid for use in Vietnam, in addition to 115 multi‑country packages that include Vietnam within their coverage. The single‑country options range from $1.30 to $329.64 and provide data allocations between 100 MB and 50 GB, with validity from 1 to 365 days. Multi‑country plans follow the same overall price and data cap ranges, though they may be tailored for travelers visiting several destinations simultaneously. The plan catalogue is split into two main types: fixed data caps, which offer a predetermined amount of data for the plan’s duration, and daily data caps, which provide a set amount of data per day; 20 of the plans are daily‑cap based while 134 are fixed‑cap based. This gives travelers a broad selection of options for connecting while in Vietnam.