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HelloRoam's Vietnam eSIM starts from €3.02 and taps into 199+ carrier networks across 185+ countries. Scan the QR code and you're online in under two minutes, on any eSIM compatible phone. Your Three Ireland, Vodafone IE, or Eir number keeps running on dual SIM.
199+
local networks
5G
5G support
2 minutes
to activate
![Vietnam [[networkType]] network speeds](/icons/figma-2026/stats-speedometer.svg){kind=icon}
Last updated
Vietnam data plans from HCMC to Hanoi on local networks
Cheap eSIM for Vietnam, starting from €3.02. Local 4G/5G data on top carrier networks in Vietnam. Works on all eSIM compatible phones. Vietnam rewards Irish travellers with Ho Chi Minh City's energy, Hoi An's lantern-lit ancient town, Ha Long Bay's karst islands, and Hanoi's Old Quarter. An eSIM for Vietnam from HelloRoam starts at €3.02 and covers the full country on local networks. Activate by QR at home before flying from Dublin. No roaming charges, no contract, no physical SIM swap. GDPR-compliant checkout, 180-day refund guarantee on unactivated eSIMs.
Vietnam eSIM with fast 5G coverage
HelloRoam eSIM plans for Vietnam start from €3.02. Connect on Vinaphone and Viettel Mobile networks with 5G in Hanoi and Ho Chi Minh City. Sort your data before you fly and arrive already connected.
- Plans start at €3.02 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
- €3.02
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in Vietnam
Pick a data plan for your destination and complete checkout online.
Scan the QR code to install your eSIM instantly.
Your eSIM installs instantly and activates the moment you land.
Track usage, top up data, and manage all your eSIMs in one place.
Pick a data plan for your destination and complete checkout online.
Scan the QR code to install your eSIM instantly.
Your eSIM installs instantly and activates the moment you land.
Track usage, top up data, and manage all your eSIMs in one place.
Trip changed? No bother, we have got you sorted.
Travel plans shift, and that's grand. HelloRoam refunds unactivated, unscanned eSIMs in full for up to 180 days after purchase, no drama.
Learn more about our refund policyHelloRoam Vietnam eSIM vs Three Ireland, Vodafone IE and Eir roaming
Comparing eSIM vs a travel SIM card for Vietnam? Eir charges up to €5.99/day for Worldwide Roaming, Vodafone IE up to €6.99/day for Global Roaming, and Three Ireland applies daily charges outside its Go Roam zone. Skip the airport SIM counter at Dublin Terminal 1 and get a prepaid eSIM from €3.02 with instant QR activation and a 180-day refund on unactivated eSIMs.
| Feature |  | Irish carrier roaming add-on | Limited data eSIM |
|---|---|---|---|
| 180-day refund policy |  |  | |
| 24/7 live chat support | |  | |
| €0 activation fees | | | |
| Free hotspot and data sharing | | | |
| No data overage charges | | | |
| Instant QR code delivery | | | |
| Premium Vietnam carrier networks | | | |
Why Travellers from Ireland Use HelloRoam e-sim for Vietnam
HelloRoam vs Other eSIM Providers for Vietnam
eSIM provider reviews from Irish travellers consistently highlight the 180-day refund policy, zero activation fees, and 24/7 live support. See how HelloRoam compares to Airalo, Holafly, Saily, and other eSIM providers on the things that matter most for your Vietnam holiday.
| Feature comparison | | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund policy | | | | | | |
| 24/7 live chat support | | | | | | |
| €0 activation fees | | | | | | |
| Free hotspot and data sharing | | | | | | |
| 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 is a digital SIM built directly into your phone: no plastic chip, no SIM tray. Scan a QR code to activate in under 2 minutes on any eSIM compatible iPhone or Android. It works as a prepaid data plan for Vietnam travel with no airport SIM counter, no physical SIM card, and no carrier contract. Sort everything at home before you head to Dublin Airport, Shannon, Cork, or Knock and you are ready to go the moment you land. guide
Mobile connectivity guide for Vietnam
Vietnam has 5G mobile coverage in Hanoi and main cities. Vietnamobile, Vinaphone, and Viettel Mobile are the core networks. For Irish visitors, Vietnam is outside the EU, so Irish carrier EU roaming does not apply. A HelloRoam eSIM from $4.
92 is typically far cheaper than international daily roaming add-ons. A HelloRoam eSIM means you arrive in Hanoi connected without hunting for a SIM card at the airport.
- HelloRoam connects to Vinaphone 5G, Viettel Mobile 5G in Vietnam
- 5G coverage across Hanoi and major cities
- Connect on Vietnamobile, Vinaphone, and Viettel Mobile
- Activate before your Dublin departure
eSIM Travel Tips for Vietnam
Sort your data before your flight from Dublin
Buy your HelloRoam eSIM for Vietnam at home, activate it over Wi-Fi, and enable data when you land at Noi Bai (Hanoi) or Tan Son Nhat (Ho Chi Minh City). You skip the airport SIM card stalls and step off the plane already connected.
Keep your Irish number active
On a dual SIM phone, keep your Eir, Three IE, or Vodafone IE SIM for calls and texts while using HelloRoam for data in Vietnam. Family and colleagues back in Ireland can still reach you on your regular Irish number.
Offline maps save data on city breaks
Download Google Maps for Hanoi, Ho Chi Minh City, and Hoi An offline before you leave Ireland. Vietnam's major cities and the tourist route from Ha Long Bay to Hoi An are well covered. Remote mountain areas near Sapa or the Ha Giang loop can have patchy signal.
Travel insurance and emergency numbers
Keep your travel insurance details handy. In Vietnam, dial 113 for police, 114 for fire, and 115 for ambulance. Save these before you fly. Your HelloRoam eSIM keeps your insurer, the Irish embassy in Hanoi, and translation tools accessible throughout your trip.
Currency and card acceptance
Notify your Irish bank before travelling to Vietnam. Card acceptance is generally good in Hanoi but carry some local currency for smaller vendors and public transport. Currency conversion apps work well on a HelloRoam data connection.
Mobile networks in Vietnam: what Irish visitors need to know
HelloRoam connects on Vinaphone and Viettel Mobile in Vietnam. Viettel covers rural areas and the north-to-south tourist route. Vinaphone has strong 5G in Hanoi and Ho Chi Minh City. Your eSIM selects the best available signal automatically.
- Vinaphone
- 5G
- Viettel Mobile
- 5G
HelloRoam eSIM vs Irish carrier roaming in Vietnam
Your connectivity options for a Vietnam trip from Ireland.
RecommendedFrom €4.25 total
Plans from €3.02. Buy before your flight from Dublin, activate at home, and arrive in Vietnam already on local data. No roaming charges and no airport SIM queues.
€2.16–€6.91 total
Available at Hanoi airport but requires setup time after a long flight. Prepaid tourist SIMs involve passport registration and unused data is typically forfeited on return.
€8.64–€17.29/day
Outside the EU, Irish carrier international roaming can cost $5 to $15 per day. A week in Vietnam on roaming could mean $35 to $100 in data charges. HelloRoam starts at €3.02.
| Category | Recommended | Local Vietnam SIM card | Eir, Three IE, or Vodafone IE roaming in Vietnam |
|---|---|---|---|
| Typical cost | From €4.25 total | €2.16–€6.91 total | €8.64–€17.29/day |
| Details | Plans from €3.02. Buy before your flight from Dublin, activate at home, and arrive in Vietnam already on local data. No roaming charges and no airport SIM queues. | Available at Hanoi airport but requires setup time after a long flight. Prepaid tourist SIMs involve passport registration and unused data is typically forfeited on return. | Outside the EU, Irish carrier international roaming can cost $5 to $15 per day. A week in Vietnam on roaming could mean $35 to $100 in data charges. HelloRoam starts at €3.02. |
Best time to visit Vietnam from Ireland
Vietnam is a popular destination for Irish holidaymakers and those visiting family or friends. The ideal season to visit Hanoi depends on the local climate cycle.
Reviewed by HelloRoam Editorial Team
Prices verified:
Your Vietnam eSIM Questions Answered
e SIM Vietnam plans from HelloRoam start from €3.02 and cover Ho Chi Minh City, Hanoi, Da Nang, and the full country on local networks. HelloRoam delivers a QR code by email, activated at home before you board. No roaming charges from your Irish provider, no physical SIM card, and a 180-day refund guarantee on unactivated eSIMs on every order.
A HelloRoam e-sim Vietnam plan covers the full country from Hanoi to Ho Chi Minh City from €3.02, including Hoi An, Da Nang, Ha Long Bay, and Hue. Activate at home before flying from Dublin so data is live on arrival. No physical SIM, no roaming fees, and a 180-day refund guarantee on unactivated eSIMs on every prepaid order.
HelloRoam is a top-rated eSIM for travellers from Ireland visiting Vietnam. Plans start from €3.02 and connect through our worldwide network of 199+ carriers, giving you local 4G/5G speeds in Vietnam. Activate via QR code in under two minutes, keep your Three Ireland, Vodafone IE, or Eir number on dual SIM, and enjoy a 180-day refund window on unactivated eSIMs. No daily roaming charge and no carrier contract.
A Vietnam eSIM starts from €3.02. Fixed data plans run from 1GB to 20GB. Unlimited daily plans suit longer trips. All plans include local 4G/5G access with no overage charges and no carrier contract. That is far less than what Eir charges for non-EU Worldwide Roaming or Vodafone IE for Global Roaming.
eSIM in Vietnam connects to local 4G/5G networks. Your phone picks the strongest available signal automatically on arrival, no manual carrier selection needed. Coverage spans major cities, airports, main roads, and most rural areas. You get the same local network speeds as residents of Vietnam, not the premium daily rates Eir or Vodafone IE charge for international roaming.
Getting your eSIM for Vietnam takes three steps. First, choose your plan at helloroam.com and pay in EUR. Second, scan the QR code from your confirmation email in Settings under Mobile Data, then Add eSIM. Third, your e-sim installs in under two minutes and activates when you land. Do everything at home before you head to Dublin Airport, Shannon, Cork, or Knock. No shop visit, no physical SIM swap, no queue.
Yes. iPhone XS and all newer models support your eSIM for Vietnam. Go to Settings, tap Mobile Data, then Add eSIM, and scan the QR code from your HelloRoam email. Your Irish number stays active on your main SIM through dual SIM while HelloRoam handles all travel data on the eSIM line. iPhone 14 and later are eSIM-only with no SIM tray needed.
HelloRoam is a top eSIM choice for Vietnam, connecting on Vinaphone and Viettel Mobile networks. Plans start at €3.02. Buy before your Aer Lingus or connecting flight, scan a QR code at home in Dublin, and arrive in Hanoi or Ho Chi Minh City already on local data.
Yes, HelloRoam eSIM works in Vietnam on Vinaphone and Viettel Mobile networks. Activate at home before your flight and connect the moment you land at Noi Bai Airport (Hanoi) or Tan Son Nhat Airport (Ho Chi Minh City).
Vietnam is outside the EU, so Irish carrier EU roaming does not apply. A HelloRoam eSIM from €3.02 is typically far cheaper than international daily roaming add-ons from Eir, Three IE, or Vodafone IE.
HelloRoam eSIM for Vietnam connects on Vietnamobile, Vinaphone, and Viettel Mobile. Your phone automatically selects the strongest 5G signal as you travel around Hanoi and Vietnam.
HelloRoam eSIM plans for Vietnam start at €3.02. Larger plans are available for longer stays or data-heavy trips.
A week in Hanoi using maps, messaging, and social media typically uses 3 to 6 GB. Streaming in your hotel evenings or making video calls back to Ireland adds more. Choose a 5 or 10 GB plan for a comfortable buffer.
HelloRoam eSIM plans for Vietnam last from 12 to 30 days depending on the data size you pick. Vietnam has 5G coverage via Vinaphone. A longer plan suits Irish travellers on extended holidays or working holidays abroad. Select your plan, scan the QR code at home in Ireland, and connect from the moment you land.
Yes, Vietnam has 5G coverage through Vinaphone. HelloRoam eSIM plans connect on the best available 5G signal across Vietnam. Buy your plan before your flight from Dublin and connect straightaway on landing.
What to Know Before You Buy
eSIM requires an unlocked, eSIM-compatible device. Check your phone settings before you buy.
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 network 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. Unactivated eSIMs qualify for a 180-day refund.
