eSIM Firsty pour Vietnam en 2026

No operators are named in Firsty’s published information for Vietnam, so the radio side is unknown rather than bad; the provider has also not stated where traffic breaks out, leaving its apparent IP location and delay to local services unclear. The catalogue spans a large range, making data sizing the real decision and carrying the risk of buying more than a fortnight needs. Firsty lists technology up to 5G, not a guarantee of it. Top-up is stated as available, so an exhausted plan can be extended rather than rebought.