4S eSIM eSIM Data Plans for Vietnam

4S eSIM does not provide a truly unlimited high‑speed data plan for Vietnam. All plans that include “Unlimited” in the name actually contain a fixed data allowance and, once that limit is reached, the speed is throttled to 1000kbps. For example, the Vietnam 50GB Unlimited – 5 days plan gives 50 GB of high‑speed data per day, and after the data is exhausted the speed reduces to 1000kbps.

If a traveler needs a larger data allowance without speed throttling, 4S eSIM offers fixed‑data plans such as the Vietnam 50GB – 90 days plan, which provides a 50 GB flat data allowance for 90 days, or the Vietnam 20GB – 15 days plan, which allocates 1.33 GB per day for that period. These fixed‑data options can be more cost‑effective for users who plan significant usage.

4S eSIM does not provide a local phone number or SMS service for Vietnam; it only offers data‑only eSIM plans. Travelers who need voice or text can use VoIP applications such as WhatsApp, Telegram or iMessage over the data connection, though some destinations, including Vietnam, may block or limit certain services, so users should confirm that their preferred apps work before purchasing.

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.