HelloRoam offers prepaid eSIM data plans for Vietnam from £2.60 a day. Your e SIM connects to local 4G/5G networks the moment you land. Activate by QR code in under two minutes, with no shop visit required. Keep your EE, Vodafone, or Three number live on dual SIM while your e-sim handles data abroad.
- Mobile networks
212+- 5G support
5G- Setup
under two minutes
Last updated
Your Vietnam eSIM with local network coverage
Cheap eSIM for Vietnam, starting from £2.60. Local 4G/5G data on top carrier networks in Vietnam. Works on all eSIM compatible phones. Vietnam stretches from Hanoi's Old Quarter to the Mekong Delta, with Ha Long Bay, Hội An, and Đà Nẵng along the way for British backpackers and holiday visitors alike. HelloRoam's plans start at £2.60 on Viettel Mobile, Vinaphone, and MobiFone networks covering the full length of the country. Activate by QR before Nội Bài or Tân Sơn Nhất Airport and arrive already online. A 180-day money-back guarantee on unactivated eSIMs covers every plan.
Vietnam eSIM with fast 5G coverage
HelloRoam provides eSIM plans for Vietnam starting from £2.60. Connect on 4G and 5G networks via Viettel Mobile and Vinaphone across Hanoi, Ho Chi Minh City, Hoi An, Da Nang, and Ha Long Bay. Activate via QR code before your flight.
- Plans start at £2.60 with 5G speeds
- Coverage from Viettel Mobile and 2+ other operators
- Instant activation in under 2 minutes
- 180-day money-back guarantee
- Vietnam coverage across major cities
- Network
- 5G
- Plans From
- £2.60
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in Vietnam
Follow these steps to get your eSIM sorted on iPhone or Android before your holiday. Works for any eSIM for international travel, no replacement SIM, no shop visit.
Set up an eSIM on your iPhone for travel from the UK
Set up an eSIM on your Android for travel from the UK
- 1
Choose your plan and checkout online
Choose a data plan for your destination and complete your purchase in GBP.
2Scan the QR code
Scan the QR code to install your eSIM straight away.
- 3
Activate in minutes: ready on arrival
Your eSIM installs instantly and activates when you land.
4Manage it all from our mobile app
Track usage, top up data, and manage all your eSIMs in one place.
Holiday changed? Not to worry, your money is safe.
Plans change. With HelloRoam, you can request a full refund on any unused eSIM plan within 180 days of purchase. No questions asked if the eSIM has not been activated.
Learn more about our refund policyHelloRoam Vietnam eSIM vs EE, Vodafone and Three roaming
When comparing eSIM vs a travel SIM card for Vietnam, HelloRoam wins on price. EE charges £6/day on their Roam Abroad Pass, Vodafone charges £6.85/day on Xtra roaming, and Three Go Roam applies fair-use data caps. Skip the airport SIM kiosk and get the cheapest eSIM deal from £2.60 with instant QR activation.
| Feature comparison | HelloRoam | UK carrier roaming add-on | Budget eSIM |
|---|---|---|---|
| 180-day refund policy |  Feature available |  Feature not available | Feature not available |
| Round-the-clock live chat | Feature available |  Feature available | Feature available |
| £0 activation fees | Feature available | Feature not available | Feature available |
| Automatic data-usage alerts | Feature available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature not available | Feature not available |
| Instant QR code delivery | Feature available | Feature not available | Feature available |
| Premium Vietnam carrier networks | Feature available | Feature not available | Feature not available |
Why UK Travellers Pick HelloRoam e-sim for Vietnam
Round-the-clock live chat support
HelloRoam support is available 24/7 via live chat, WhatsApp, and email. A real person responds in under five minutes, whether you are setting up before a Heathrow flight or troubleshooting on holiday. That kind of round-the-clock access to mobile data help is hard to find from any other travel eSIM provider.
Best eSIM for Vietnam
Connect to local 4G/5G networks on local carriers the moment you land in Vietnam. Buy your plan, scan the QR code, and get online without paying EE, Vodafone, or Three roaming fees. A prepaid data package for your destination costs a fraction of standard carrier daily charges.
Dual SIM ready
Keep your UK mobile number active for calls and texts on your main SIM. HelloRoam runs travel data on a second eSIM line on any dual SIM compatible phone. No need to choose between your EE or Vodafone line and your holiday data. Your wireless connectivity abroad stays separate from your home plan, so there are no bill surprises when you return.
212+ carrier networks including Vietnam
HelloRoam eSIM connects to 212+ carrier networks across 185+ countries. Your phone picks the strongest 4G/5G signal in Vietnam with no manual carrier selection needed. That breadth of network access means consistent cellular coverage whether you are in a city centre or a quieter coastal area.
Data alerts before you run out
HelloRoam sends an alert when you reach 80% of your data allowance. Top up from your account dashboard in seconds. A pay as you go eSIM with no contracts and no surprise bills on holiday. Managing your internet abroad this way keeps costs clear and predictable from start to finish.
Local network speeds in Vietnam
HelloRoam eSIM connects to local 4G/5G networks in Vietnam at local data prices. You get fast speeds for navigation, video calls, and streaming without paying EE or Vodafone daily roaming rates. Local network speeds through a travel eSIM are the same as what residents get, giving you a reliable connection throughout your trip.
Global and regional plans
Visiting more than one country? HelloRoam regional eSIMs cover the EU, Asia, the Americas, and 185+ destinations in a single purchase. Unlimited data plans work for longer holidays. One QR code, no border hassle. A single regional plan gives you mobile data and wireless connectivity across multiple countries without ever swapping a physical SIM card.
Hotspot and data sharing in Vietnam
Share your Vietnam eSIM data with a laptop or tablet using your phone's mobile hotspot. No extra charges and no separate setup needed. Works on all eSIM compatible phones with data sharing enabled. It is a practical way to keep a travel companion or work device running on the same prepaid data package at no added cost.
eSIM Prices for Vietnam
HelloRoam, the best eSIM Vietnam. Compare plans from 1 to 30 days and pick the right data for your trip.
| Number of days | Price |
|---|---|
| 1 day | £3.30 |
| 3 days | £9.42 |
| 7 days | £20.35 |
| 15 days | £39.64 |
| 22 days | £53.78 |
| 30 days | £67.39 |
HelloRoam vs Other eSIM Providers for Vietnam
HelloRoam eSIM reviews from UK travellers highlight the 180-day refund policy, no activation fees, and round-the-clock live support. See how HelloRoam compares to Airalo, Holafly, Saily, and other eSIM providers for your Vietnam holiday.
| Feature comparison | HelloRoam | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund policy | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| 24/7 live chat support | Feature available | Feature available | Feature available | Feature not available | Feature available | Feature available |
| £0 activation fees | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Automatic data-usage alerts | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Instant QR code delivery | Feature available | Feature available | Feature available | Feature available | Feature available | Feature available |
| Premium Vietnam carrier networks | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| Own branded carrier identity (SPN) | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature available |
What Is an e SIM? How eSIM Works in Vietnam
An eSIM card is a digital SIM built into your phone. There is no plastic chip and no SIM tray to open. Scan a QR code to activate your e SIM in under two minutes on any eSIM compatible iPhone or Android. It works as a prepaid international data plan for Vietnam travel with no airport SIM shop queue, no replacement SIM card, and no carrier contract. Mobile data through an eSIM connects to local in-country networks, giving you the same wireless connectivity as a resident rather than a roaming tourist. Follow the step-by-step setup guide to get connected before your flight from Heathrow, Gatwick, or any UK airport. guide
Mobile connectivity guide for Vietnam
Vietnam has strong 4G coverage across its cities and major tourist destinations. Viettel Mobile, Vinaphone, and MobiFone cover Hanoi, Ho Chi Minh City, Hoi An, Da Nang, Nha Trang, Hue, and Ha Long Bay.
Remote highland areas near Sapa, the Mekong Delta's more isolated waterways, and jungle national parks can have patchier signal. Vietnam is a hugely popular backpacking and holiday destination for British travellers.
A HelloRoam eSIM connects you when you land at Noi Bai International in Hanoi or Tan Son Nhat in Ho Chi Minh City.
- HelloRoam connects to Viettel Mobile 5G, Vinaphone 5G, MobiFone 5G in Vietnam
- 4G and 5G in Hanoi, Ho Chi Minh City, Hoi An, Da Nang, and Ha Long Bay
- Connect on Viettel Mobile and Vinaphone networks
- Activate via QR code before your long-haul flight from the UK
eSIM Travel Tips for Vietnam
Install your eSIM before your long-haul flight to Vietnam
Set up your HelloRoam eSIM at home before your flight to Hanoi or Ho Chi Minh City. Enable data when you land and you will be connected for your taxi or shuttle. No Viettel SIM card queue in the arrivals hall.
Currency in Vietnam
Vietnam uses the Vietnamese dong (VND). Current exchange rates are roughly £1 to 32,000-33,000 VND. Vietnam is excellent value for British backpackers and tourists. Cash is widely used in markets and local restaurants. Keep your HelloRoam eSIM active for currency conversion and ATM location apps.
Ha Long Bay cruise connectivity
Ha Long Bay itself has 4G signal in the main bay area and near most tourist cruise anchorages. More remote sections of Lan Ha Bay and Cat Ba Island's inland tracks can have weaker signal. Download offline maps and cruise schedules before boarding your overnight junk.
Sapa and northern highland trekking
Sapa town has 4G coverage. Trekking routes through rice terraces to Lao Chai and Ta Van villages have reasonable signal near the main paths. Very remote highland trails and isolated hill tribe villages can have limited or no coverage. Download detailed offline trekking maps before heading out.
Vietnam e-visa for British passport holders
British citizens can apply for a 90-day e-visa for Vietnam online before travelling. Your HelloRoam eSIM keeps you connected to check your e-visa status and access your booking confirmation after landing.
Mobile networks in Vietnam: what British travellers need to know
Vietnam's main mobile operators are Viettel, VinaPhone, and MobiFone, with Vietnamobile as a smaller fourth player. HelloRoam connects on Viettel Mobile and Vinaphone. Both have 5G live in Hanoi and Ho Chi Minh City and 4G across the rest of the country. Your eSIM selects the better available signal of the two automatically.
- Viettel Mobile
- 5G
- Vinaphone
- 5G
- MobiFone
- 5G
HelloRoam eSIM vs UK roaming charges in Vietnam
A practical comparison of data options for your Vietnamese trip.
| Category | HelloRoam eSIM Recommended | Vietnamese SIM card | UK carrier roaming (EE, Three, Vodafone UK, O2) |
|---|---|---|---|
| Typical cost | From £3.67 total | £1.86–£5.97 total | £7.46–£14.91/day |
| Details | Plans start at £2.60. Buy before your flight, install via QR code at home, and land in Hanoi or Ho Chi Minh City already connected. No daily UK carrier international charges. | Viettel and Vinaphone SIM cards are available at Vietnamese airports and convenience stores. They are very affordable but require passport registration. A HelloRoam eSIM avoids all this. | Vietnam falls outside UK carriers' European roaming zones, so EE, Vodafone UK, O2, and Three charge daily international rates or sell add-ons. A month of backpacking on daily charges adds a painful amount to your bill. HelloRoam gives you one predictable price. |
Prices approximate as of . Actual savings vary.
Best time to visit Vietnam from the UK
Vietnam is a long country with different weather in north, central, and south. The dry season varies by region. Northern Vietnam (Hanoi, Sapa, Ha Long Bay) is best from October to April at 15°C to 25°C. Central Vietnam (Hoi An, Da Nang, Hue) is ideal from January to August. Southern Vietnam (Ho Chi Minh City, Mekong Delta) is best from November to April. February and March offer pleasant conditions across much of the country. British visitors often travel during the UK summer holidays despite Vietnam being in its wet season in some areas.
Reviewed by the HelloRoam Editorial Team
Reviewed by the HelloRoam Editorial Team
Top Destinations in Vietnam
Bien Hoa
Bien Hoa is a large city in Dong Nai Province north of Ho Chi Minh City, a major industrial hub that is part of the greater Ho Chi Minh economic zone. HelloRoam connects you here.
Viettel and Mobifone cover Bien Hoa with 4G. The city is about 30 km from Ho Chi Minh City's Tan Son Nhat Airport.
Can Tho
Can Tho is the capital of the Mekong Delta and Vietnam's fourth-largest city, famous for its floating markets, canals, and abundant fruit orchards. HelloRoam keeps you online.
Viettel and Mobifone cover Can Tho with 4G. The floating market is best visited at dawn by boat.
Cn Th
Visit Cn Th and stay online with HelloRoam data plans that cover all of Vietnam.
Can Tho in the Mekong Delta has Vinaphone 4G coverage in the city center. The river network areas have variable signal.
Da Nang
Da Nang combines sandy beaches, the Marble Mountains, and easy access to ancient Hoi An. HelloRoam keeps you connected throughout your Vietnam stay.
Viettel and Mobifone cover the city well. Activate before landing at Da Nang Airport.
Ha Noi
Ha Noi (Hanoi) is the heart of Vietnam, a capital of ancient temples, French villas, and the world's best pho. HelloRoam gives you fast data across the city.
Viettel covers Ha Noi with 4G and 5G. Activate before landing at Noi Bai International Airport, about 45 minutes from the Old Quarter.
Hai Ba Trng
HelloRoam covers Hai Ba Trng and all of Vietnam with fast, reliable mobile data.
Hai Ba Trung district in Hanoi has Vinaphone 4G coverage. This central district has consistent signal throughout.
Hai Phong
Hai Phong is Vietnam's third city and main northern port, a gateway to the islands of Ha Long Bay and a city of French colonial architecture. HelloRoam connects you here.
Viettel and Mobifone cover Hai Phong with 4G. High-speed ferries depart from Cat Bi Port to Cat Ba Island.
Haiphong
HelloRoam gives you instant data access in Haiphong, Vietnam with no extra fees.
Haiphong has Vinaphone 4G coverage across the city. Cat Bi International Airport has terminal coverage for travelers.
Hanoi
Hanoi is Vietnam's atmospheric capital, a city of ancient temples, French colonial architecture, and the best pho in the country. HelloRoam keeps you connected.
Viettel offers the strongest 5G in Hanoi. Activate before landing at Noi Bai Airport.
Ho Chi Minh City
Stay connected in Ho Chi Minh City with HelloRoam eSIM data plans that work across Vietnam.
Ho Chi Minh City has Vinaphone 4G throughout. Tan Son Nhat Airport has strong indoor signal in all terminals.
Hue
Hue is Vietnam's imperial city, home to the Nguyen Dynasty's Citadel, royal tombs, and the great Thien Mu Pagoda on the Perfume River. HelloRoam keeps you connected.
Viettel and Mobifone cover Hue with 4G. Activate before landing at Phu Bai Airport or arriving by train on the Reunification Line.
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Reviews
HelloRoam eSIM Reviews from UK Travellers
Real reviews from Trustpilot and the App Store, quoted as written.
40k+ travellers have used HelloRoam
Cat
On a trip to Europe, my hotel Wi-Fi was so slow and outside Wi-Fi was unreliable. I couldn’t take it anymore so I got helloroam for a few days. It was tricky to set up correctly because of the primary settings (with my original number). But I reached out to their customer service via WhatsApp. Super responsive and helpful, with specific and clear steps to troubleshoot. Appreciate having 4G roaming instead of being stuck with in and out Wi-Fi during my trip!!
Rated 5 out of 5 by this reviewer
Very good experience! The eSIM was easy to set up and worked great in London. It was much cheaper than it would have been to use my own operator there.
Ilona
Rated 5 out of 5 by this reviewer
metulker
Hard to set up but help was good
Rated 5 out of 5 by this reviewer
Reuben
Really happy with HelloRoam. Everything worked as expected, from messaging and Google Maps through to streaming without any issues. Easy to use, reliable and affordable. Would happily use them again when travelling.
Rated 5 out of 5 by this reviewer
Angeline
Reliable connection. Reasonable pricing.
Rated 4 out of 5 by this reviewer
Last updated
Common Questions About Vietnam eSIM
How much does the best eSIM Vietnam cost for British north-to-south travellers?
An eSIM in Vietnam from HelloRoam costs from £2.60 on Viettel Mobile, Vinaphone, and MobiFone networks covering Hanoi, Ho Chi Minh City, Hội An, Ha Long Bay, and Phú Quốc. Activate by QR code before your long-haul Heathrow flight and arrive at Nội Bài Airport already connected. HelloRoam backs every plan with a 180-day refund guarantee on unactivated eSIMs.
Which eSIMs Vietnam plan suits a north-to-south backpacking trip for British visitors?
eSIMs Vietnam plans from HelloRoam cover the full country from Hanoi to the Mekong Delta on Viettel Mobile, Vinaphone, and MobiFone 5G networks from £2.60. Activate before your UK departure so you can explore every street food alley and Ha Long Bay junk cruise without switching SIM cards. No contract required on any plan.
Does a Vietnam eSIM work across the full north-to-south route from Hanoi to Ho Chi Minh City?
A HelloRoam best eSIM Vietnam plan connects to Viettel Mobile, Vinaphone, and MobiFone 5G networks across Hanoi, Da Nang, Hoi An, and Ho Chi Minh City from £2.60. Coverage is strong along the main coastal route and rail corridor. Remote Central Highlands ethnic minority village tracks and Ha Giang Loop mountain sections have reduced signal.
Is a Vietnam eSIM cheaper than buying a local Viettel or Vietnamobile SIM at Noi Bai?
Viettel counters at Noi Bai and Tan Son Nhat airports sell tourist SIMs requiring passport registration. A HelloRoam eSIMs Vietnam plan activates by QR at home for £2.60 on Viettel Mobile, Vinaphone, and MobiFone 5G networks. Land at Noi Bai or Tan Son Nhat already sorted and head straight to your transfer without any terminal registration queue.
What is the best eSIM for Vietnam?
HelloRoam is a strong eSIM choice for British travellers visiting Vietnam, connecting on Viettel Mobile and Vinaphone with 4G and 5G coverage across Hanoi, Ho Chi Minh City, Hoi An, and beyond. Plans start from £2.60. Install via QR code and arrive connected.
Does a HelloRoam eSIM work in Vietnam?
Yes, HelloRoam eSIM plans work throughout Vietnam on multiple networks. Coverage is strong in all major cities and tourist destinations. Remote highland trekking and rural river delta areas may have limited signal.
Which networks does HelloRoam use in Vietnam?
HelloRoam uses Viettel Mobile and Vinaphone in Vietnam. Both networks cover tourist attractions, airports, and city centres, with 5G live in Hanoi and Ho Chi Minh City and 4G elsewhere. Your phone selects whichever of the two is stronger at your location, so you stay connected without manual switching.
How do I activate an eSIM for Vietnam?
Buy the plan on helloroam.com, scan the QR code under Settings, then Mobile Data, then Add eSIM, and do it at home on Wi-Fi before departure. Setup takes about five minutes. When you land in Vietnam, enable mobile data and the plan activates immediately on Viettel Mobile or Vinaphone.
How much does a HelloRoam eSIM for Vietnam cost?
Vietnam plans start at £2.60, and pricing varies with data size and duration. Larger plans cover longer backpacking trips from Hanoi to Ho Chi Minh City along the length of the country. A HelloRoam plan costs far less than UK carrier roaming, with no hidden fees or surprise charges on your home bill.
Does HelloRoam work in Hoi An?
Yes, HelloRoam works throughout Hoi An including the Ancient Town UNESCO area, An Bang Beach, and surrounding villages on Viettel and Vinaphone. Coverage is strong across the town and nearby countryside.
Is a HelloRoam eSIM cheaper than EE roaming in Vietnam?
Yes. Vietnam sits outside UK carriers' European roaming zones and EE charges daily international rates there. A HelloRoam eSIM from £2.60 works out far cheaper than daily UK carrier charges across a month-long Vietnam trip.
Does HelloRoam eSIM include calls and texts in Vietnam?
HelloRoam plans carry data only, not calls or texts. Use Zalo, Vietnam's favourite messaging app, or WhatsApp over your data connection, and keep your UK SIM active to receive calls on your British number. Emergency calls work on any available network even without an active data plan.
How much data do I need for three weeks in Vietnam?
Three weeks travelling north to south with Google Maps, Grab, WhatsApp, and social media typically uses 8 to 15 GB, so a 10 GB plan covers most backpacking trips. Daily streaming or video calling needs something larger. The HelloRoam app shows your remaining balance in real time.
Does HelloRoam work in Ha Long Bay?
Yes, HelloRoam works in Ha Long Bay on Viettel and Vinaphone. The main bay area and most cruise anchorages have 4G signal. Very remote sections of Lan Ha Bay may have weaker coverage.
Does HelloRoam work in Hanoi's Old Quarter?
Yes, HelloRoam works throughout Hanoi including the Old Quarter, Hoan Kiem Lake, and the Temple of Literature on Viettel and Vinaphone. Coverage is strong across the capital city.
What to Know Before You Buy
eSIM requires an unlocked, eSIM-compatible device. Check your phone settings before purchasing.
Most travel eSIM plans provide data only. Your existing phone number stays active for calls and texts on your primary SIM.
Coverage quality varies by location within Vietnam. Urban areas typically have strong 4G/5G coverage, while rural or remote areas may have limited connectivity.
Install your eSIM before departure. Activation requires an internet connection, which may not be available at your destination airport.
Transparency Notice
- Service Provider Name (SPN)
- HelloRoam appears as the carrier name on your phone's status bar through the SPN, a standardized field in the eSIM profile. Unlike most travel eSIM resellers, HelloRoam provisions its own Service Provider Name.
- Public Network Name (PNN)
- The PNN is the network name field in your eSIM profile, defined in 3GPP TS 31.102 (EF_PNN). Your phone can read it to display the name of the network you are connected to.
- Access Point Name (APN)
- HelloRoam eSIMs auto-configure their Access Point Name during installation. Your device connects to the strongest local network infrastructure without manual settings.
Prices are our retail rates across 185+ countries. Plan recommendations use real traveller feedback and network performance data. Every purchase includes a 180-day refund window if the eSIM has not been activated.
Future Syncs Limited 124 City Road, London, EC1V 2NX, UK +44 203 916 6249 help@helloroam.com Reg. No. 15950168
