4S eSIM eSIM Data Plans for Vietnam

4S eSIM does not provide a truly unlimited data eSIM for Vietnam. Its bundled plans that carry the word “Unlimited” actually have a defined data cap and, once that limit is reached, the speed is throttled to 1000 kbps. For travelers who need higher data volumes, 4S eSIM offers fixed‑data options such as a 50 GB eSIM valid for 5 days priced at $34.26 USD or a 30 GB eSIM for 30 days at $52.43 USD. Fixed data plans are typically more cost‑effective, especially for heavy data users, because they avoid the post‑cap throttling that applies to the plans marketed as “Unlimited.”

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.

In Vietnam, 4S eSIM offers 56 single‑country plans and 108 multi‑country plans. Prices across these options range from $1.67 to $195.83, while data caps vary from 714 MB up to 50 GB, allowing travelers to choose a package that fits their data needs and budget.