What you can buy at Tan Son Nhat
Tan Son Nhat has two terminals: T1 for domestic flights and T2 for international arrivals. SIM counters sit in the public arrivals area of the international terminal, alongside currency exchange and transport desks. You will see carrier-branded booths and independent agents selling the same categories of product:
- Tourist data SIMs — a fixed data allowance over a set number of days, usually with a local phone number attached.
- Data-only SIMs — cheaper, no calls, fine if you use messaging apps.
- Top-up vouchers — credit you add later if you run out.
Staff at the counter will normally fit the SIM and check it works before you leave the desk. Bring your passport: Vietnamese SIM registration is tied to identity documents, and the seller will need to register the number in your name.
Typical prices and what drives them
Airport pricing is convenience pricing. The same carrier bundles are generally cheaper at official carrier stores and authorised dealers in District 1, District 3 or District 7. What you pay at SGN depends on three things:
| What you are choosing | Why it matters |
|---|---|
| Data allowance | 30 GB and "unlimited" bundles are not the same thing; unlimited plans often throttle after a daily cap |
| Validity | A 30-day bundle costs more than a 7-day one, and you cannot use it after it expires |
| Calls and SMS | Bundles with a local number and call minutes cost more than data-only plans |
As a rule, expect airport counters to charge a premium over city prices for the identical bundle. If your trip is short and your time in Ho Chi Minh City is limited, that premium buys you a working connection in ten minutes. If you are staying a month, it is worth walking into a carrier store instead.
Opening hours at SGN
SIM counters at Tan Son Nhat are tied to flight movements rather than to fixed shop hours. In practice:
- Counters in the international arrivals hall are staffed across the day and into the night, because SGN handles long-haul arrivals around the clock.
- Late-night arrivals may find fewer staffed booths, with some shutters down.
- If your flight lands in the early hours, do not assume a specific counter will be open.
Because opening hours are not published as a fixed timetable by the airport, treat any single set of hours you read online as indicative. The safe assumption is: daytime arrivals will find counters open, very late arrivals may not.
The alternative: a Vietnam eSIM
An eSIM is a digital profile you install on your phone before departure. There is nothing to collect at the airport, no passport registration at a counter, and no queue after a long flight.
When an eSIM wins
- You land late and do not want to depend on a counter being open.
- You want data working the moment you switch off flight mode.
- You would rather not hand your passport over at a booth.
- You are transiting and only need data, not a local number.
When a physical SIM still wins
- You need a Vietnamese phone number for calls, bookings or local registrations.
- Your phone does not support eSIM.
- You want a long-validity plan and prefer to buy it in person in the city.
Check whether your handset supports eSIM before you decide — the phone compatibility page lists the models that do. If you are unsure how installation works, the help centre walks through activation step by step.
Decision table: airport SIM vs city SIM vs eSIM
| Option | Best for | Trade-off |
|---|---|---|
| Airport counter SIM | Arrivals who want a local number immediately | Highest price for the same bundle; depends on counter being open |
| City carrier store SIM | Stays of two weeks or more | Requires a trip into the city and a passport registration in store |
| Vietnam eSIM | Data-first travellers, late arrivals, short trips | No local phone number; requires an eSIM-capable handset |
Before you fly: a short checklist
- Confirm your phone is eSIM-capable, or that it takes a physical nano-SIM.
- Check your handset is unlocked by your home carrier.
- Decide whether you need a Vietnamese phone number or only data.
- Install and test your eSIM at home, on wi-fi, before you travel.
- Keep your home SIM active for bank codes and two-factor messages if you need them.
If you buy an eSIM, you can install it days before departure and it will connect when you arrive. The Vietnam eSIM store shows the plans available, with validity and data allowance stated on each product page — those product details, not general assumptions, are what you should rely on.
If something does not work
Most arrival-day problems are settings, not coverage. The usual fixes are switching mobile data on for the correct line, enabling data roaming on the travel profile, and setting the eSIM as the line used for mobile data. The help centre covers installation, activation and troubleshooting, and existing customers can use order lookup if they need their order details.