Asia · Destinations

Vietnam eSIM: north to south, online the whole way

5 min read · Updated July 5, 2026

Vietnam is a long, thin country you travel end to end — Hanoi’s old quarter, a Ha Long cruise, Hoi An’s lanterns, the Mekong Delta. A Vietnam eSIM keeps Grab, maps and translation working from Noi Bai or Tan Son Nhat airport onward.

Which networks you get

A Vietnam travel eSIM roams on Viettel and Vinaphone, the country’s largest operators. Viettel in particular has the widest reach — cities, coast, and well into the countryside and highlands. The eSIM selects the strongest signal automatically.

How much data for Vietnam

Grab, maps, translation and messaging are light — 300–500 MB a day; add reels and photo backup for near 1 GB. A 5 GB plan covers a week comfortably; a full north-to-south trip, or heavy sharing, wants 10 GB+.

Set up before you land

Install on Wi‑Fi before you fly and switch on data roaming after immigration — you’ll have Grab ready before you leave the terminal. The validity clock starts on first connection in Vietnam.

Get your Vietnam eSIM

Instant QR by email · full refund before installation.

Questions

Does it work in Ha Long Bay and the Mekong?
On land and near the coast, yes. Out on the water and in remote delta channels, coverage can drop, as with any network.
Can I use Grab?
Yes — Grab, maps and translation all work over the eSIM data. Keep your home SIM for any OTP texts.
Do I need to register?
No — an eSIM skips the ID registration a physical Vietnamese SIM now requires.

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