Roamify

Roamify positions itself as an affordable eSIM entry point for travelers. Plans start at $2 and cover over 200 destinations, making it easy to find Vietnam-specific coverage. The platform supports both data-only plans and voice/SMS combinations, giving you flexibility depending on whether you need calling capability during your trip.

This option works best for budget-conscious travelers who want simple pricing without long-term commitments. Roamify's low starting price makes it competitive against physical SIM cards, and the wide destination coverage means you're not locked into a single-country solution if your travel plans extend beyond Vietnam.