Most tourists get the best value from a local eSIM activated before landing (Airalo, Saily or Holafly) or a Viettel physical SIM bought in the city rather than the airport. Viettel has the widest coverage outside major cities, while eSIMs skip the passport paperwork and airport queues entirely — and some banking apps, like LocalPay, now bundle a free eSIM with signup.
Staying connected is one of the first things to sort out after landing in Vietnam, whether it's for maps in Hanoi's Old Quarter, ride-hailing apps in Ho Chi Minh City, or simply keeping in touch while riding the Ha Giang Loop. Vietnam has solid 4G and expanding 5G coverage, but choosing the right SIM or eSIM makes a real difference to both cost and hassle.
SIM registration is mandatory for foreigners in Vietnam, which means a passport is required at purchase whether that's at an airport kiosk or a phone shop in town. eSIMs sidestep a lot of this friction since they can be bought and activated online before departure. Below is a comparison of the main physical SIM and eSIM options tourists use in 2026, along with a couple of shortcuts worth knowing about.
1. LocalPay's free eSIM offer
LocalPay, the QR payments app used across Vietnam, Indonesia and the Philippines, is currently including a 5GB eSIM for Vietnam with new signups. It's aimed at travellers who want to land already connected — no airport queue, no separate eSIM purchase — while also getting a wallet set up for paying at cafes, markets and street stalls that take local QR payments.
It won't replace a long-term data plan for a multi-month stay, but for a short trip it covers maps, messaging and ride-hailing from the moment you land, bundled with the payments side of the app.
2. Viettel (physical SIM)
Viettel is Vietnam's largest network and the one most frequently recommended for travellers heading outside the big cities. It has the strongest rural and mountain coverage of the three main carriers, which matters for routes like Sapa, Ha Giang and Phong Nha where the other networks can drop out.
Tourist SIM packages are sold at official Viettel stores and some convenience shops, generally cheaper in the city than at the airport. Expect to show a passport for registration, and to pick from prepaid data bundles lasting anywhere from a few days to a month.
3. Vinaphone (physical SIM)
Vinaphone runs official tourist SIM kiosks in the arrivals halls at Noi Bai (Hanoi), Tan Son Nhat (Ho Chi Minh City), Da Nang, Cam Ranh and Phu Quoc airports, which makes it the most convenient option straight off the plane.
Airport pricing tends to run 20–30% higher than buying the same plan in the city, so it suits travellers who want data working the moment they land rather than the cheapest possible rate. Bundled airport packages typically run from around 125,000 to 375,000 VND depending on data allowance and validity.
4. Mobifone (physical SIM)
Mobifone covers cities and popular tourist areas reasonably well, with pricing similar to Vinaphone. It's a fine backup option if a particular Viettel or Vinaphone store is out of tourist SIM stock, though its rural coverage lags behind Viettel on routes further off the beaten path.
5. Airalo
Airalo is one of the most widely used global eSIM marketplaces, with Vietnam-specific plans ranging from short 3-day passes to month-long packages. It's a solid pick for travellers who want a no-fuss install through an app before departure, with plans priced per GB rather than unlimited.
6. Holafly
Holafly focuses on unlimited-data eSIM plans, with per-day pricing that drops the longer the plan length. That makes it a reasonable option for longer stays or digital nomads who don't want to track data usage, though it's pricier than pay-per-GB options for short trips.
7. Saily
Saily, from the team behind NordVPN, offers Vietnam eSIMs as well as regional "Ultra" plans for travellers visiting more than one Southeast Asian country on the same trip. It's a good fit for multi-stop itineraries where buying separate local SIMs in each country would be a hassle.
Quick tips before you buy
- Bring your passport — SIM registration is mandatory in Vietnam for both locals and tourists.
- Buying in the city is usually 20–30% cheaper than airport kiosks, but airport SIMs save time on arrival.
- eSIMs need to be activated on wifi before or shortly after landing — check compatibility with your phone model first.
- If your trip covers remote areas like Ha Giang or Sapa, prioritise Viettel coverage over price.
- Multi-country trips are usually cheaper on a single regional eSIM than buying local SIMs in each stop.
There's no single best option for every traveller — it comes down to how remote your route is, how long you're staying, and whether you'd rather save money or save time at arrivals. Viettel remains the safest bet for coverage outside the cities, eSIMs from Airalo, Holafly or Saily are the fastest way to land already connected, and offers like LocalPay's bundled eSIM are worth grabbing if you're setting up a digital wallet for the trip anyway.
Frequently asked questions
Yes. SIM registration is mandatory for everyone in Vietnam, including tourists, so bring your passport when buying a physical SIM at a kiosk or store.
eSIMs are more convenient since they can be activated before you land and don't require passport paperwork at a counter. Physical SIMs from Viettel are usually the better choice if you're heading to remote or mountainous areas where local network coverage matters more than convenience.
Airport SIM packages typically run from about 125,000 to 375,000 VND depending on data and validity, while the same or better plans bought in the city can cost noticeably less — often around $10 for roughly 20GB.
Some apps bundle a free or discounted eSIM as a signup incentive. LocalPay, for example, currently includes a 5GB Vietnam eSIM with new signups alongside its QR payments wallet.
