A detailed comparison of eSIM and physical SIM cards for tourists visiting Vietnam (Tan Son Nhat Airport). Which one should you buy for cost savings and strong 4G/5G signal? Practical advice from airport experts.
The choice between eSIM and physical SIM depends on your phone model and convenience needs. In Vietnam, eSIM (priced from 180,000 VND) is popular due to its instant online activation, while physical SIM (priced from 150,000 VND) remains a lifesaver for older phones or when you need a reliable physical connection. With the 4G/5G infrastructure at Tan Son Nhat Airport, both offer stable, high speeds.
eSIM for travel: The convenience of the digital age.
Is eSIM better than a regular SIM? When traveling in Vietnam?
eSIM (Embedded SIM) is the top choice for modern travelers thanks to its ability to be purchased and activated entirely online without removing or inserting the SIM tray. In Vietnam, major carriers like Viettel and Vinaphone support eSIM with strong 4G/5G signals, ensuring you have internet access as soon as you land at Tan Son Nhat Airport.
Using an eSIM helps travelers avoid the risk of losing their main SIM card when removing and inserting it. In particular, you can purchase an eSIM through apps like Klook or Traveloka while still abroad, then simply scan the QR code at the airport to call a ride-hailing service (Grab/Be) to your hotel immediately. In my experience, this is the most convenient solution for transit passengers or short-term travelers.
Physical SIM: A traditional and stable choice
When should you still choose to buy a traditional physical SIM card?
Physical SIM cards remain popular thanks to their 100% compatibility with all current phone models, from older iPhones to mid-range Android phones. If your phone doesn't support eSIM technology, or you want a physical SIM card for easy switching to other phones in your group, a physical SIM card is an irreplaceable option.
At the arrival area of Tan Son Nhat Airport, physical SIM card counters are always available. However, we "insiders" usually advise customers to pre-order online and pick up at the counter for a cheaper price (20-30%) compared to buying directly on-site. Physical SIM cards in Vietnam often come with "powerful" data packages such as 4GB/day or unlimited data, very suitable for those who need to watch YouTube or livestream continuously.
Detailed comparison: Speed, cost, and coverage.
To help you decide, here's a practical comparison based on the most important criteria for a visitor arriving in Saigon:
| Criteria | Travel eSIM | Physical SIM |
| Convenience | Very high (Scan QR code) | Average (Removing and inserting the SIM tray) |
| Cost | 180,000 VND – 350,000 VND | 150,000 VND – 300,000 VND |
| Compatibility | Only newer models (iPhone XR and later) | All models |
| Network speed | 4G/5G stable | 4G/5G stable |
| Place to buy | Online 24/7 | Airport counter or shop |
| Risk | Forgot to save the QR code | It's easy to lose your main SIM card. |
Buying a SIM card at Tan Son Nhat Airport: Things to note to avoid being ripped off.
How can I buy a SIM card at Tan Son Nhat airport at the best price?
The international terminal (T2) has dozens of SIM card vendors right after you pass through customs. A helpful tip is not to rush to buy at the first counter. Head towards the exit; the counters in the waiting area often have more promotions.
One risk to avoid is the use of unregistered "junk SIMs." For peace of mind, you should choose Viettel or Vinaphone plans. Especially if you arrive during peak hours (12 PM or 7 PM), queuing to buy a SIM in person will be very time-consuming. Booking through Klook and picking up at a clearly labeled service counter is the smartest way to save at least 30 minutes of waiting time.
Top picks:
For customers who value convenience: Buy an international eSIM on Klook – Receive your code via email in 5 minutes. [eSIM order link]
For customers using older devices/requiring large amounts of data: Viettel physical SIM card with 4GB/day data, available for pickup at the airport. [Link to order physical SIM card]
How to check if your phone supports eSIM
How do I know if my phone is compatible with Vietnamese eSIM?
Before spending money on an eSIM, you absolutely must check compatibility. For iPhones, go to Settings > General > AboutScroll down to the "Carrier Lock" section. If it shows "No SIM Limit" and there's an "eSIM" option below, it's ready to use.
With Android devices, the quickest way is to open the dial pad and press *#06#If a code appears on the screen... EIDThis means your device supports eSIM. Don't skip this step, as travel eSIM packages are often non-refundable if your device doesn't support them.
Quick installation and activation guide in 3 minutes.
Is it difficult to activate a Vietnamese eSIM?
The process is extremely simple: After purchase, you will receive an email containing a QR code. Connect to the free Wi-Fi at Tan Son Nhat Airport (“TSN Free Wi-Fi”), then go to the section Network settings > Add eSIM and scan that code.
Important note: After scanning, restart your device and enable "Data Roaming" for the network to work. If the signal is weak, go to your carrier settings and manually select Viettel or Vinaphone instead of leaving it on automatic.
Frequently Asked Questions (FAQ)
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H3: Can I use both my main SIM and eSIM simultaneously?
Yes, most smartphones nowadays support Dual SIM. You can keep your primary SIM for important messages/calls and use your Vietnamese eSIM for internet access.
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H3: Is buying a SIM card at Tan Son Nhat airport more expensive than in the city?
The reality is that it's about 20,000-50,000 VND more, but in return you get instant internet access to find directions and call a taxi, avoiding being harassed by touts.
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H3: Can eSIM be used to register for Grab or Gojek?
Yes, as long as your eSIM plan includes a phone number to receive the OTP code. Please read the plan description carefully when purchasing.
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H3: Which SIM card offers the best signal in remote areas (Da Lat, Ha Giang)?
If your trip includes mountainous provinces, prioritize choosing Viettel (both eSIM and physical SIM) due to its widest coverage in Vietnam.
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H3: Do I need to provide my passport when buying an eSIM?
According to the new regulations, travel SIM cards purchased through major retailers are usually pre-registered with travel packages; you just need to scan the code to use them – it's very simple.
A message from Blue Lotus: Wishing you a smooth and successful journey in Vietnam! Don't forget to save this article and share it with your friends who are about to fly to Tan Son Nhat airport.
Suggested further reading:
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[Guide to catching taxis and Grab at Tan Son Nhat Airport without being overcharged]
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[Top 5 extremely clean hourly hotels near Tan Son Nhat Airport]
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[How to handle lost luggage at Terminal 2 of the international airport]
