If you want mobile data ready as soon as you land in Vietnam, an eSIM is the easiest option. You can install it before departure, keep your normal SIM in your phone and connect without searching for a shop at the airport.
For most travelers, Airalo is the best eSIM for Vietnam. Its fixed-data plans start at $4, it also offers unlimited plans, and the range makes it easy to match the package to a short city break or a longer trip.
Holafly is the better choice for heavy data users who want unlimited mobile data without watching a remaining-data counter. It costs more, but includes up to 1 GB of hotspot sharing per day in Vietnam.
Quick answer
Best for most Vietnam trips: Airalo
Airalo gives you the widest choice. Current Vietnam packages include 1 GB for three days from $4, 5 GB for seven days for $10, 10 GB for 15 days for $17.50 and unlimited options from $11.50 for three days.
That is the option I would buy for a normal holiday using Google Maps, Grab, WhatsApp, translation apps and occasional social media. Check Airalo Vietnam plans and current prices.
Best for unlimited data: Holafly
Holafly sells unlimited-data plans by trip length. Current prices include $11.90 for three days, $27.50 for seven days, $50.50 for 15 days and $73.90 for 30 days.
Choose it if you stream, upload a lot of video, make frequent video calls or simply do not want to monitor usage. Check Holafly unlimited Vietnam plans.
Vietnam eSIM options at a glance
| Airalo | Holafly | |
|---|---|---|
| Best for | Most travelers | Heavy data users |
| Starting price | $4 / 1 GB / 3 days | $11.90 / unlimited / 3 days |
| 7 days | 5 GB for $10 or unlimited for $27 | Unlimited for $27.50 |
| 15 days | 10 GB for $17.50 or unlimited for $48 | Unlimited for $50.50 |
| 30 days | 20 GB for $29 or unlimited for $69 | Unlimited for $73.90 |
| Network shown | VNPT | GPC Vinaphone (VNPT) |
| Hotspot | Uses your purchased allowance | Up to 1 GB per day |
| Calls and SMS | Data-only on the Vietnam plans reviewed | Data-only |
Why Airalo is my first choice for Vietnam
Airalo works well because you do not have to pay for unlimited data when you only need maps, messages and transport apps. The cheapest plan covers a very short visit, while larger fixed-data and unlimited options suit longer routes.
For a one-week Vietnam trip, 5 GB is enough for many travelers if hotel Wi-Fi handles video and large downloads. For two weeks, I would normally choose 10 GB. If you are working remotely or uploading video every day, move up to unlimited rather than constantly rationing data.
The official Vietnam listing shows VNPT as the primary network. Coverage should be reliable in populated destinations, but signal can weaken in mountain areas and remote stretches of road. That matters more around places such as Sa Pa and Ha Giang than it does in central Hanoi, Da Nang or Ho Chi Minh City.
If northern Vietnam is part of your itinerary, read our guide to getting from Hanoi to Sa Pa. Having your eSIM active makes it much easier to check pickup details and contact your operator on the day.
See current Airalo Vietnam eSIM options.
When Holafly makes more sense
Holafly removes the main decision: how many gigabytes to buy. You choose the number of travel days and receive unlimited mobile data for that period.
I would choose Holafly if I expected to use my phone heavily for video, frequent social uploads, long video calls or remote work. It is also useful when several long travel days make reliable hotel Wi-Fi uncertain.
Vietnam plans are data-only and work on GPC Vinaphone (VNPT). Holafly says its Vietnam package includes 1 GB of hotspot sharing per day, so it can cover light laptop use. That is not the same as unlimited tethering: after the daily shareable allowance, keep the remaining phone data for the handset.
The trade-off is price. Holafly costs more than a modest Airalo fixed-data package, and many holidaymakers will not use enough data to justify the difference.
See current Holafly Vietnam prices.
Does an eSIM work well across Vietnam?
Yes, for the places most visitors travel. Hanoi, Ho Chi Minh City, Da Nang, Hoi An, Ninh Binh, Ha Long and the main resort areas are populated destinations where mobile coverage is normally straightforward.
Be more realistic in mountainous and remote areas. Holafly specifically warns that coverage can be limited or unstable on parts of the Ha Giang Loop, mountain routes around Sa Pa and in Phong Nha-Ke Bang National Park. A different eSIM brand cannot create a signal where the local network has no coverage.
Before long road or rail journeys, download offline maps, hotel details and tickets. Your eSIM is still useful for checking delays and contacting accommodation whenever the network returns.
How much data do you need in Vietnam?
| Trip and usage | What I would buy |
|---|---|
| 3–5 days, light use | 1–3 GB |
| One week, normal use | 5 GB |
| Two weeks, normal use | 10 GB |
| Three to four weeks | 20 GB |
| Daily video, heavy uploads or remote work | Unlimited |
Maps, Grab, WhatsApp, email and restaurant searches use relatively little data. Video is what changes the calculation. Download Netflix, Spotify playlists, language packs and offline maps over Wi-Fi before a travel day, and a fixed allowance goes much further.
Airalo vs Holafly for Vietnam
The choice is simpler than it looks:
- Choose Airalo for the lowest starting price, flexible fixed-data packages and a better-value plan for normal travel use.
- Choose Holafly when unlimited data and not monitoring usage are more important than the lowest price.
For a deeper provider-level comparison covering support, plan philosophy and international use, read our Airalo vs Holafly guide.
eSIM or a local Vietnam SIM?
A local physical SIM can be inexpensive and may make sense for a long stay, especially if you need a Vietnamese phone number. The downside is the time spent buying, registering and changing the SIM after arrival.
An eSIM is easier for a short trip. You can install it at home, keep your regular SIM available for incoming messages and connect immediately after landing. That convenience is the main reason to pay a little more than the cheapest local offer.
Remember that the travel eSIM plans discussed here are primarily for data. Use WhatsApp, FaceTime, Messenger or another internet-based service for calls and messages.
Install your Vietnam eSIM before departure
- Check that your phone supports eSIM and is carrier-unlocked.
- Buy the Vietnam plan while you have a stable internet connection.
- Install it through the provider app or QR code.
- Label the new line “Vietnam” so you do not confuse it with your normal SIM.
- Keep the travel eSIM off until arrival if the provider instructions say activation starts on connection.
- After landing, select the Vietnam eSIM for mobile data and enable data roaming on that line.
- Turn off data roaming on your home SIM to avoid accidental charges.
Do not delete the eSIM after installation. Some profiles cannot simply be installed again from the same QR code.
Can you keep your WhatsApp number?
Yes. Installing a Vietnam eSIM does not require changing the number registered to WhatsApp. Keep WhatsApp linked to your existing number and use the eSIM only for mobile data. Your contacts and conversations stay in place.
Frequently asked questions
What is the best eSIM for Vietnam?
Airalo is the best choice for most travelers because plans start at $4 and include both fixed-data and unlimited options. Holafly is better for heavy users who want unlimited data without monitoring usage.
How much does a Vietnam eSIM cost?
Airalo currently starts at $4 for 1 GB valid for three days. Holafly starts at $11.90 for three days of unlimited data. Prices were checked in September 2026 and can change.
Does Airalo work in Vietnam?
Yes. Airalo’s official Vietnam page lists VNPT as the primary network and offers both fixed-data and unlimited packages.
Is Holafly unlimited in Vietnam?
Holafly sells its Vietnam plans with unlimited phone data. Hotspot sharing is limited to 1 GB per day, and fair-use network management can still apply.
Can I use Grab with a data-only eSIM?
Yes. Grab works over mobile data. Make sure the account is already set up and keep access to the phone number or email used for verification.
Should I buy my eSIM before arriving in Vietnam?
Yes. Install it while you have reliable Wi-Fi, then activate the travel line after landing. This avoids depending on airport Wi-Fi for setup.
Final verdict
For most people looking for the best eSIM for Vietnam, I would buy Airalo. The $4 starting price, useful fixed-data choices and unlimited alternatives make it the strongest all-round option. Check Airalo Vietnam plans.
If you use a lot of mobile data and want the simplest possible plan, choose Holafly instead. You pay more, but receive unlimited phone data for the number of days selected. Check Holafly unlimited Vietnam plans.
Planning the rest of your budget? See how much a trip to Vietnam costs and compare it with our Southeast Asia travel budget.
