App Store
An eSIM for Vietnam from HelloRoam starts at £2.60 across 199+ carrier networks in 185+ countries. Activate via QR code in under two minutes on any eSIM compatible phone. Keep your EE, Vodafone, or Three number active through dual SIM.
199+
Mobile networks
5G
5G support
under two minutes
Setup
![4G 5G [[networkType]] speed](/icons/figma-2026/stats-speedometer.svg){kind=icon}
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 Vinaphone and Viettel Mobile 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 Vinaphone and 1+ 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
Choose a data plan for your destination and complete your purchase in GBP.
Scan the QR code to install your eSIM straight away.
Your eSIM installs instantly and activates when you land.
Track usage, top up data, and manage all your eSIMs in one place.
Choose a data plan for your destination and complete your purchase in GBP.
Scan the QR code to install your eSIM straight away.
Your eSIM installs instantly and activates when you land.
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 |  | UK carrier roaming add-on | Budget eSIM |
|---|---|---|---|
| 180-day refund policy |  |  | |
| Round-the-clock live chat | |  | |
| £0 activation fees | | | |
| Automatic data-usage alerts | | | |
| No data overage charges | | | |
| Instant QR code delivery | | | |
| Premium Vietnam carrier networks | | | |
Why UK Travellers Pick HelloRoam e-sim for Vietnam
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 | | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund policy | | | | | | |
| 24/7 live chat support | | | | | | |
| £0 activation fees | | | | | | |
| Automatic data-usage alerts | | | | | | |
| No data overage charges | | | | | | |
| Instant QR code delivery | | | | | | |
| Premium Vietnam carrier networks | | | | | | |
| Own branded carrier identity (SPN) | | | | | | |
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 Vinaphone 5G, Viettel Mobile 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.
- Vinaphone
- 5G
- Viettel Mobile
- 5G
HelloRoam eSIM vs UK roaming charges in Vietnam
A practical comparison of data options for your Vietnamese trip.
RecommendedFrom £3.67 total
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.
£1.86–£5.97 total
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.
£7.46–£14.91/day
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.
| Category | 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. |
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 HelloRoam Editorial Team
Prices verified:
Common Questions About Vietnam eSIM
An eSIM in Vietnam from HelloRoam costs from £2.60 on Vinaphone and Viettel Mobile 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.
eSIMs Vietnam plans from HelloRoam cover the full country from Hanoi to the Mekong Delta on Vinaphone and Viettel Mobile 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.
A HelloRoam best eSIM Vietnam plan connects to Vinaphone and Viettel Mobile 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.
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 Vinaphone and Viettel Mobile 5G networks. Land at Noi Bai or Tan Son Nhat already sorted and head straight to your transfer without any terminal registration queue.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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)
- HelloRoam holds a registered Public Network Name, the official carrier identity filed with telecommunications authorities. HelloRoam is recognized as a licensed service provider, not a white-label reseller.
- 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, with unused data refunded on activated plans.
