eSIM Vietnam from £2.59

HelloRoam is a global eSIM provider offering instant mobile data in 185+ countries. Buy prepaid travel eSIM plans with no extra fees, no contracts, and instant activation on any eSIM-compatible device.

An eSIM for Vietnam from HelloRoam starts at £2.59 per day across 204+ 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.

194+
Mobile networks
5G
5G support
under two minutes
Setup

Last updatedMay 2026

Your Vietnam eSIM with local network coverage

Cheap eSIM for Vietnam, starting from £2.59. Local 4G LTE and 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 £2.59 on Vietnamobile, Vinaphone, Viettel Mobile, and 1 more 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 covers every plan.

Vietnam eSIM with fast 5G coverage

HelloRoam provides eSIM plans for Vietnam starting from $4.92. Connect on 4G and 5G networks via Viettel, Vinaphone, and MobiFone across Hanoi, Ho Chi Minh City, Hoi An, Da Nang, and Ha Long Bay. Activate via QR code before your flight.

Plans start at £2.59 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: £2.59
Activation: Under 2 min
Guarantee: 180 days

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 policy

HelloRoam 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 £2.59 with instant QR activation.

HelloRoam Vietnam eSIM vs EE, Vodafone and Three roaming
Feature		UK carrier roaming add-on	Budget eSIM
180-day refund policy
Round-the-clock live chat
£0 activation fees
99.8% uptime guarantee
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
Feature comparison		Airalo	Holafly	Nomad	Saily	Ubigi
180-day refund policy
24/7 live chat support
£0 activation fees
99.8% uptime guarantee
No data overage charges
Instant QR code delivery
Premium Vietnam carrier networks
Own branded carrier identity (SPN)

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, Vinaphone, MobiFone, and Vietnamobile
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 Mobile, MobiFone (VinaPhone), and Vietnamobile. HelloRoam connects on Vietnamobile, Vinaphone, Viettel Mobile (with 5G), Vinaphone (with 5G), and MobiFone. Viettel has the widest nationwide coverage. 5G is available in Hanoi and Ho Chi Minh City. Your eSIM selects the best available network automatically.

Vinaphone: 5G
Viettel Mobile: 5G

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.

James Harrington

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Prices verified: 31 May 2026

Common Questions About Vietnam eSIM

An eSIM in Vietnam from HelloRoam costs from £2.59 on Vietnamobile, Vinaphone, Viettel Mobile, and 1 more 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.

eSIMs Vietnam plans from HelloRoam cover the full country from Hanoi to the Mekong Delta on Vietnamobile, Vinaphone, Viettel Mobile, and 1 more 5G networks from £2.59. 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 Vietnamobile, Vinaphone, Viettel Mobile, and 1 more 5G networks across Hanoi, Da Nang, Hoi An, and Ho Chi Minh City from £2.59. 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 £2.59 on Vietnamobile, Vinaphone, Viettel Mobile, and 1 more 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, Vinaphone, MobiFone, and Vietnamobile with 4G and 5G coverage across Hanoi, Ho Chi Minh City, Hoi An, and beyond. Plans start from $3.49. 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 eSIM for Vietnam connects to Viettel / VinaPhone with 4G coverage across major tourist and urban areas. Plans start from $3.49. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.

HelloRoam uses Vietnamobile, Vinaphone, Viettel Mobile, and MobiFone in Vietnam. Your phone selects the best available signal from whichever network is strongest at your location. Viettel and VinaPhone are among the strongest 4G providers in the area, covering tourist attractions, airports, and city centers. HelloRoam automatically selects the best available signal so you stay connected without manual network switching.

Buy your plan on helloroam.com, scan the QR code in your phone settings, and enable data when you land. Setup takes about five minutes and is simplest at home before departure. The setup takes about five minutes. Buy your plan at helloroam.com, scan the QR code under Settings, then Mobile Data, then Add eSIM. Do this before you leave home using Wi-Fi. When you land in Vietnam, enable mobile data and the plan activates immediately on Viettel / VinaPhone.

HelloRoam eSIM plans for Vietnam start at $3.49. Larger plans cover longer backpacking trips from Hanoi to Ho Chi Minh City along the length of the country. Plans start from $3.49 depending on data size and duration. Compared with roaming charges from home carriers, a HelloRoam plan costs significantly less for a typical trip to Vietnam. There are 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. HelloRoam eSIM for Vietnam connects to Viettel / VinaPhone with 4G coverage across major tourist and urban areas. Plans start from $3.49. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.

Yes. Vietnam is outside the EU and EE charges daily international rates. A HelloRoam eSIM from $3.49 is significantly cheaper than daily UK carrier charges for a month-long Vietnam backpacking trip. HelloRoam eSIM for Vietnam connects to Viettel / VinaPhone with 4G coverage across major tourist and urban areas. Plans start from $3.49. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.

HelloRoam plans are data-only. Use WhatsApp or Zalo (popular in Vietnam) for calls and messages. Keep your UK SIM active to receive calls on your British number from home. HelloRoam eSIM plans are data-only. Use WhatsApp, FaceTime, or Viber for calls over your data connection. Keep your home SIM active for voice calls if needed. Emergency calls work on any network even without an active data plan.

Three weeks travelling north to south, using Google Maps, Grab, WhatsApp, and social media typically uses 8 to 15 GB. A 10 GB plan is usually sufficient for most backpacking trips. For a week of typical travel (Google Maps navigation, WhatsApp messages, and social media) you need 3 to 5 GB. If you stream video or make video calls daily, choose a 8 to 10 GB plan. The HelloRoam app shows your remaining data 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. HelloRoam eSIM for Vietnam connects to Viettel / VinaPhone with 4G coverage across major tourist and urban areas. Plans start from $3.49. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.

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. HelloRoam eSIM for Vietnam connects to Viettel / VinaPhone with 4G coverage across major tourist and urban areas. Plans start from $3.49. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.

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 money-back guarantee.

Future Syncs Limited124 City Road, London, EC1V 2NX, UK+44 203 916 6249help@helloroam.comReg. No. 15950168

Number of days	Price
1 day	£3.16
3 days	£9.09
7 days	£21.21
15 days	£43.96
22 days	£61.58
30 days	£81.01

Category	Recommended	Vietnamese SIM card	UK carrier roaming (EE, Three, Vodafone UK, O2)
Typical cost	From £3.66 total	£1.86–£5.95 total	£7.43–£14.87/day
Details	Plans start at $4.92. 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 is outside the EU. EE charges up to £2 per day. A month-long Vietnam trip with daily UK carrier roaming charges could add £60 to your monthly phone bill.

Number of days	Price
1 day	£3.16
3 days	£9.09
7 days	£21.21
15 days	£43.96
22 days	£61.58
30 days	£81.01

Category	Recommended	Vietnamese SIM card	UK carrier roaming (EE, Three, Vodafone UK, O2)
Typical cost	From £3.66 total	£1.86–£5.95 total	£7.43–£14.87/day
Details	Plans start at $4.92. 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 is outside the EU. EE charges up to £2 per day. A month-long Vietnam trip with daily UK carrier roaming charges could add £60 to your monthly phone bill.

eSIM Vietnam

Your Vietnam eSIM with local network coverage

eSIM Vietnam

Your Vietnam eSIM with local network coverage

Vietnam eSIM with fast 5G coverage

Holiday changed? Not to worry, your money is safe.

HelloRoam Vietnam eSIM vs EE, Vodafone and Three roaming

Why UK Travellers Pick HelloRoam e-sim for Vietnam