Is it worth getting an eSIM for Vietnam?
Yes, for most travellers an eSIM is the easiest and most practical way to stay connected in Vietnam. It saves you from hunting down a local SIM and the passport registration that Vietnamese SIM cards now require, avoids expensive roaming charges, and lets you arrive online without any paperwork.
The convenience factor is real in Vietnam. Airport kiosks and street stalls often charge tourists a premium, and since Vietnam tightened its rules, buying a local SIM from Viettel, Vinaphone, or Mobifone means showing your passport and registering the SIM to your name. With an eSIM you skip all of that. You install the plan before you fly and connect automatically the moment you land at Noi Bai, Tan Son Nhat, or Da Nang.
The cost difference matters too. Using your normal home mobile plan in Vietnam usually triggers daily roaming charges. As a rough guide based on standard pay-as-you-go rates from major UK networks:
- EE: around £6 per day for roaming in Vietnam
- Vodafone UK: around £6 per day under their Global Roaming add-on
- O2: around £6 per day on their Travel Bolt-On
That works out to roughly £42 for a one-week trip and £84 for two weeks. By comparison, an eSIM plan from Ubigi or Holafly is dramatically cheaper for the same period. Ubigi's 3GB plan is just $6.90 (€5.93), and even unlimited-data plans come in well below what you would pay in roaming charges.
For short city breaks, beach holidays, motorbike trips, or longer remote-work stays, an eSIM is the smarter choice for almost every traveller heading to Vietnam.
What is an eSIM, and why use one in Vietnam?
An eSIM, short for embedded SIM, is a digital SIM card built directly into your phone. Instead of inserting a physical card, you download an eSIM profile from a provider, which gives you access to a mobile network in Vietnam without ever visiting a store. Setup happens through a QR code or app, usually in under five minutes.
Why use an eSIM in Vietnam?
- Skip the paperwork: no passport registration, no queueing at a kiosk, no language barrier at a SIM counter.
- Cost-effective: avoid expensive international roaming fees from your home carrier.
- Works on arrival: install before you fly and you are online the moment you land.
- Reliable in cities and along travel routes: strong 4G and growing 5G across Vietnam's main destinations.
- Easy to manage: track usage and top up from an app, with no physical card to lose.
Does Vietnam support eSIM?
Yes, Vietnam fully supports eSIM technology for travellers. You can install an eSIM from international providers like Ubigi and Holafly before you arrive, and your phone connects automatically to a partner network when you land. Vietnam's main carriers, Viettel, Vinaphone, and Mobifone, all support eSIM connectivity through international roaming agreements.
As long as your phone is unlocked and eSIM-compatible (most iPhones from XR and newer, recent Samsung Galaxy and Google Pixel models support eSIMs), you can install your plan before your flight and activate it the moment you reach any Vietnamese airport.
Mobile networks in Vietnam: which one matters for your trip?
Vietnam has three main mobile networks, and the one your eSIM connects to affects the coverage you get, especially away from the cities.
Viettel is Vietnam's largest network with the widest 4G coverage nationwide and the strongest reach into rural and mountainous areas. For travellers heading north to Sapa, Ha Giang, or the highlands, Viettel generally offers the most reliable signal.
Vinaphone (part of VNPT) is a strong nationwide network with excellent coverage in the major cities and good reach along the main travel routes. Holafly's Vietnam eSIM connects via Vinaphone.
Mobifone offers strong 4G speeds in urban areas, particularly in Hanoi, Ho Chi Minh City, and Da Nang, though its rural coverage is less extensive than Viettel.
Which network matters for your eSIM choice
- If your trip focuses on cities like Hanoi, Ho Chi Minh City, or Da Nang, all three networks deliver strong connectivity.
- If you are heading to the northern highlands (Sapa, Ha Giang, the Ha Giang loop), Viettel has the strongest reach. Signal can still drop in remote mountain passes regardless of network.
- If you are island-hopping to Phu Quoc or Con Dao, coverage is good in the main towns and resort areas but patchy in remote corners.
Here is how our two recommended providers connect: Ubigi connects to local Vietnamese networks for fast, reliable data across the cities and main travel routes. Holafly runs on Vinaphone for reliable nationwide coverage. For trips deep into the northern mountains, it is worth checking each provider's coverage page before you rely on a signal.
Best eSIMs for Vietnam in 2026
The best eSIM for Vietnam depends on your data needs and travel style. Below are our two recommended providers, Ubigi and Holafly, both offering reliable coverage across Vietnam, easy online setup, and flexible plans.
Ubigi: Best for fast data and flexible plans
Ubigi consistently delivers strong performance across Southeast Asia. Its Smart Activation feature means your plan only starts once you connect to a Vietnamese network, so no days are wasted in transit. Plans range from small GB bundles to unlimited data, making it a flexible pick for both short city breaks and longer stays.
Why we recommend Ubigi for Vietnam:
- Plans from 3GB right up to unlimited data, so you only pay for what you need
- Reliable 4G and 5G coverage across Vietnam's cities and travel routes
- Smart Activation: your plan starts on arrival, not at purchase
- Easy setup and top-ups through the Ubigi app or a QR code
- Great for hotspotting, streaming, and video calls
- 10% off your purchase with code NOMADWISE
Ubigi pricing for Vietnam
Ubigi offers both fixed-data bundles and unlimited plans, so you can match the plan to your trip. Data bundles start at $6.90 (€5.93) for 3GB over 15 days, with 10GB for $12.90 (€11.09) and 50GB for $36.90 (€31.73) over 30 days. If you would rather not track data, unlimited plans run $24.90 (€21.41) for 7 days and $54.90 (€47.21) for 30 days. The full price list is in the summary table near the top of this guide.
Holafly: Best for unlimited data and day-based plans
Holafly is ideal for travellers who want hassle-free unlimited data across their whole Vietnam trip. Instead of fixed bundles, you choose how many days you need, which suits exploring everywhere from the Mekong Delta to Ha Long Bay without watching a data counter.
Why we recommend Holafly for Vietnam:
- Unlimited data with no caps or overage fees
- Plans by number of days instead of fixed bundles, ideal for set-length trips
- Runs on Vinaphone for reliable nationwide coverage
- Instant QR-code activation before departure
- 24/7 multilingual customer support via live chat
- Works alongside your home SIM via dual SIM, so you keep your home number
- 5% off with code NOMADWISE
Holafly pricing for Vietnam
Holafly structures its Vietnam plans by trip duration, with unlimited data for the window you pick. Plans run from $11.90 (€10.23) for 3 days and $27.50 (€23.65) for 7 days up to $73.90 (€63.55) for 30 days. Because everything is unlimited, you do not need to forecast your usage, which is useful if your trip includes video calls, streaming, or working remotely. The full duration list is in the summary table above.
Both providers are reliable, easy to install, and built for travellers. Ubigi is the better choice if you want flexible GB bundles or unlimited data and the option to pay only for what you use. Holafly is the better pick if you want simple unlimited data by the day with 24/7 support. For more options, see our Vietnam eSIM directory to explore additional providers.
eSIM coverage across Vietnam's main destinations
Vietnam's connectivity is excellent in its cities and along the main tourist trail, and more variable in the northern mountains and on remote islands. Both Ubigi and Holafly perform well in the major destinations below.
Hanoi
Vietnam's capital has excellent 4G and growing 5G coverage on all major networks. Both Ubigi and Holafly work reliably across the Old Quarter, Hoan Kiem, Tay Ho (the expat and cafe district), and the main business areas, so it is a strong base for remote work and video calls.
Ho Chi Minh City (Saigon)
Vietnam's largest city and main business hub has extensive, fast network coverage. Both providers deliver reliable speeds across District 1, District 3, Thao Dien, and the main coworking and cafe areas, easily enough for remote work, ride-hailing (Grab is everywhere), and streaming.
Da Nang and Hoi An
Da Nang is one of Vietnam's most popular bases for digital nomads, and coverage is strong across the city, the beaches, and nearby Hoi An. Both Ubigi and Holafly handle navigation, video calls, and daily browsing comfortably.
Ha Long Bay
The main harbour towns and most cruise routes around Ha Long Bay have decent coverage, though signal can dip out among the more remote karst islands. For an overnight cruise, download maps and anything essential before you sail.
Sapa and the northern highlands
The mountain town of Sapa and the main northern routes have reasonable coverage in town, with Viettel offering the strongest reach. Signal becomes patchy on remote treks and high mountain passes, including parts of the Ha Giang loop, so plan for stretches offline.
Phu Quoc and the beaches
Phu Quoc, Nha Trang, and Mui Ne all have good coverage in the main resort and town areas. Expect slower or intermittent signal in remote corners of the islands and quieter beaches.
How to choose the right eSIM for Vietnam
Picking the right eSIM for Vietnam comes down to a few key factors:
Data usage: light users who mainly need maps, messaging, and browsing can get by with Ubigi's 3GB or 10GB bundles. Heavy users who stream, video call, or work remotely should look at Ubigi's larger or unlimited plans, or Holafly's unlimited day-based plans. For digital nomads on longer stays, unlimited data removes data anxiety entirely.
Trip length: short trips of a week or less pair well with Ubigi's 7-day unlimited plan or Holafly's shorter durations. Longer Vietnam stays suit Ubigi's 30-day bundles or Holafly's 30-day unlimited plan.
Where you are going: if your trip focuses on Hanoi, Ho Chi Minh City, or Da Nang, both providers work well. If you are heading into the northern highlands, coverage leans on Viettel's reach, so check each provider's coverage page first.
Budget: Ubigi's GB bundles are the cheapest entry point if you only need a few gigabytes. Holafly is the better value if you want genuinely unlimited data for a set number of days.
Device compatibility: most modern smartphones support eSIMs, including iPhone XR and newer, recent Samsung Galaxy models, and Google Pixel 4 and above. Check your settings under "Mobile Network" or "SIM Management" to confirm your device is compatible and unlocked.
Tethering needs: if you plan to share your connection with a laptop or tablet, both Ubigi and Holafly support hotspotting.
How to set up your eSIM in Vietnam
Setting up an eSIM for Vietnam is quick and can be done before your flight. Once installed, your phone connects automatically when you land.
- Confirm your device supports eSIMs: check your phone settings under "Mobile Network" or "SIM Management" to make sure your device is eSIM-compatible and unlocked.
- Purchase your eSIM: buy your plan from Ubigi or Holafly before your trip.
- Install the eSIM: you will receive a QR code by email, or you can install directly through the provider's app. Scan the code or follow the in-app steps to add the profile to your phone.
- Activate data roaming: once installed, enable data roaming in your settings and select your eSIM as the primary mobile data line.
- Test your connection: when you land in Vietnam, open a browser or maps app to confirm you are online before leaving the airport Wi-Fi.
💡 Tip: before installing a new eSIM, delete any expired profiles and rename the new one (for example "Vietnam Trip 2026") to keep things organised.
Final thoughts and recommendations
Whether you are coworking in Hanoi, riding the Ha Giang loop, island-hopping to Phu Quoc, or relaxing on the beaches of Da Nang, a reliable eSIM keeps you connected across Vietnam and saves you the hassle of a local SIM.
- 👉 Choose Ubigi if you want fast data, flexible GB bundles, and the option of unlimited plans. Use code NOMADWISE for 10% off.
- 👉 Choose Holafly if you want simple unlimited data by the day with 24/7 support. Use code NOMADWISE for 5% off.
No matter which provider you choose, an eSIM will make your Vietnam trip easier and keep you connected from the moment you land.
