Tan Son Nhat airport eSIM (SGN): land online

Tan Son Nhat is southern Vietnam's gateway, with the domestic terminal a short walk from the international one. The eSIM is on before the bags arrive.

SGN
Walk between terminals
Digital arrival card
Local buses cover the city

Illustration: a traveller steps out of the Tan Son Nhat terminal with a suitcase, a green bus and scooters on the road.

The short answer

Install the eSIM at home before you fly to Ho Chi Minh City (SGN) and switch it on after landing, with data roaming on for the eSIM line. Tan Son Nhat's domestic terminal is within walking distance of the international one, and from 15 April 2026 the government encourages arrivals at SGN to file its digital arrival card online before the flight.

Checked October 2, 2026

Where the signal holds

Arrival form
The digital arrival card
From 15 April 2026, foreign nationals arriving at Tan Son Nhat are encouraged to file Vietnam's digital arrival card online before arrival. It is not yet mandatory, and it may be extended to other airports.
4G and 5G
Vietnam's four networks
Viettel, VinaPhone, MobiFone and Vietnamobile all run 4G mobile services, and Viettel, VinaPhone and MobiFone list 5G as well.
Data roaming on
Your eSIM
The eSIM runs on a Vietnamese network and shows that network's name in your phone's settings. Turn data roaming on for the eSIM line.

Practical notes

Getting into townTaxis are everywhere in Ho Chi Minh City, local buses cover a good portion of the city, and ride-hailing apps such as Grab run on a data connection.
Taxis and pickupsVietnamese travel advice says to use only official taxis or a trusted ride-hailing app, to avoid motorcycle taxis, and to check the driver and the licence plate before you get in.
PayingThe currency is the Vietnamese dong. You must declare cash over 15 million dong or 5,000 US dollars at customs when you arrive.
When to goTemperatures sit around 30 °C all year. December to April is the clear stretch; May to November brings the wet season, with a dependable afternoon downpour.

Arrival, step by step (Ho Chi Minh City Tan Son Nhat)

Install the eSIM at home on Wi-Fi before you fly, and keep the line switched off. After landing, turn off airplane mode, switch the eSIM line on, choose it for mobile data and turn on data roaming for that line only. If you are arriving at SGN, the government encourages you to file the digital arrival card before the flight; if the phone does not connect at the kerb, restart it once and work through the checks in the help pages one by one.

The plan for this trip

Illustration: a hand holds a phone showing a QR code beside a lotus flower and a small globe.

15 days · 8 GB a day · US$10.88

Tax included. The plan names its Vietnamese network, and whether it has calls or a number, before you pay.

Buy on VietSIM

Questions

What is the digital arrival card for Tan Son Nhat?

A free online form that the Vietnamese government encourages foreign arrivals at SGN to file before arrival, from 15 April 2026. It is not mandatory yet, and the government says it may change or extend to other airports.