HelloRoam offers a Southeast Asia eSIM from €3.45. HelloRoam covers 185+ countries through 212+ partner networks. Your eSIM taps into local 4G/5G networks the moment you land, with no roaming charges. 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 while your eSIM handles the data.
- local networks
212+- network type
4G LTE with 5G in capitals- to activate
2 minutes
Last updated
Southeast Asia eSIM coverage on local networks
Cheap eSIM for Southeast Asia, starting from €3.45. Local 4G/5G data on local partner networks in Southeast Asia. Works on any carrier-unlocked, eSIM-compatible phone. Southeast Asia is Ireland's most popular long-haul region, drawing Irish travellers to Phuket beaches, Bali rice terraces, Hoi An's lanterns, Angkor Wat, and the Maldives. HelloRoam's eSIM Southeast Asia plans start from €3.45 and cover your chosen country on local networks. Activate by QR code 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.
Southeast Asia eSIM with 4G LTE with 5G in capitals coverage
HelloRoam Southeast Asia eSIM covers Thailand, Malaysia, and Singapore on one plan. Irish travellers moving between the three stay connected without buying a SIM at each border.
- Plans start at €3.45 with 4G LTE with 5G in capitals speeds
- Coverage from local networks
- Instant activation in under 2 minutes
- 180-day refund on unactivated eSIMs
- Southeast Asia coverage across major cities
- Network
- 4G LTE with 5G in capitals
- Plans From
- €3.45
- Activation
- Under 2 min
- Refund
- 180 days if unactivated
How to Set Up an eSIM in Southeast Asia
Follow these steps to get started with an eSIM on your iPhone or Android.
Set up an eSIM on your iPhone with the HelloRoam app
Set up an eSIM on your Android with the HelloRoam app
- 1
Choose your plan and checkout
Pick a data plan for your destination and complete checkout online.
2Scan the QR code
Scan the QR code to install your eSIM instantly.
- 3
Activate in minutes: ready on arrival
Your eSIM installs instantly and activates the moment you land.
4Manage everything from the app
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 Southeast Asia eSIM vs a travel SIM card or Three Ireland, Vodafone IE and Eir roaming
Comparing an eSIM with a travel SIM card for Southeast Asia? Outside the EU, Eir, Vodafone IE and Three Ireland roaming charges add up day by day. Skip the airport SIM counter at Dublin Airport and get a prepaid eSIM for Southeast Asia from €3.45, with instant QR activation and a 180-day refund on unactivated eSIMs.
Why Travellers from Ireland Use HelloRoam e-sim for Southeast Asia
24/7 live chat support
Stuck at 2am in Bangkok, or sorting things out the night before you fly from Dublin? HelloRoam support is available 24/7. Message us by live chat, WhatsApp or email at help@helloroam.com. Data problems don't wait for office hours, and neither do we.
Best eSIM for Southeast Asia
Get data at 4G/5G speeds the moment you land in Southeast Asia. On trips outside the EU, skip your home carrier's roaming fees. HelloRoam connects you to local carrier networks in minutes, whether you're on holiday or working. Your connection is ready before you clear customs.
Dual SIM ready
Keep your Three Ireland, Vodafone IE, or Eir mobile number active for calls and texts. HelloRoam runs travel data on a second eSIM line on any dual SIM compatible phone. No need to choose between your Irish number and your data abroad. Running two lines on one handset means family back home can always reach you on your usual number, while your data runs on a local network at one prepaid HelloRoam price.
212+ partner networks worldwide
HelloRoam connects to 212+ carrier networks across 185+ countries. Your phone joins a partner 4G/5G network automatically, from European cities to long-haul destinations in Asia and the Americas. Speeds depend on the local network.
Usage alerts before you run out
HelloRoam emails you as your data runs low on a fixed plan, so you can top up or buy a new plan in time. Where your plan allows it, top up from the app without reinstalling your eSIM or visiting a shop. Adding a fresh prepaid data package takes under a minute from your account dashboard.
Local network speeds in Southeast Asia
HelloRoam eSIM connects to local 4G/5G networks in Southeast Asia for one prepaid HelloRoam price. Use maps, video calls and streaming without roaming charges from Eir or Vodafone IE on trips outside the EU. Speeds depend on the local network and your location. You pay HelloRoam's own price, shown before you buy, not the local carrier's tariff or your Irish carrier's international add-ons.
Global and regional plans
Heading to more than one country? HelloRoam regional plans cover many countries in Europe, Asia, the Americas and more, in one eSIM purchase. One multi-country data plan means no SIM swapping at borders and a single account managing all your international mobile data in one place.
Hotspot and data sharing in Southeast Asia
Share your Southeast Asia eSIM data with a laptop or tablet using your phone's hotspot. No extra fees, no setup. Works on all eSIM compatible phones. Tethering and mobile hotspot support means the whole group stays online without buying separate data plans for every device.
Best eSIM Prices for Southeast Asia
HelloRoam, the best eSIM Southeast Asia. Compare plans and find the right data for your trip.
| Number of days | Price |
|---|---|
| 1 day | €3.11 |
| 3 days | €8.87 |
| 7 days | €19.17 |
| 15 days | €37.34 |
| 22 days | €50.66 |
| 30 days | €63.47 |
HelloRoam vs Other eSIM Providers for Southeast Asia
See how HelloRoam compares with Airalo, Holafly, Nomad, Saily and Ubigi for your Southeast Asia trip. The table covers a 180-day refund on unactivated eSIMs, data overage charges and instant QR code delivery.
| Feature comparison | HelloRoam | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund (unactivated eSIMs) |  Feature available |  Feature not available |  Feature available | Feature not available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature available | Feature available | Feature available | Feature available | Feature available |
| Instant QR code delivery | Feature available | Feature available | Feature available | Feature available | Feature available | Feature available |
What Is an e SIM? How eSIM Works in Southeast Asia
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 Southeast Asia 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
eSIM Coverage Guide for Irish Travellers in Southeast Asia
Southeast Asia has strong 4G in cities and major tourist areas, with more limited coverage in remote jungles, mountains, and smaller islands.
Thailand is the most popular Southeast Asian destination for Irish holiday travellers. Bangkok, Phuket, Chiang Mai, Koh Samui, and all main resort areas have strong 4G from AIS, DTAC, and True Move.
Singapore has world-class 4G and 5G from Singtel, StarHub, M1, and Simba across the entire city-state. Many Irish travellers transit through Singapore en route to other Southeast Asian destinations.
Malaysia's Kuala Lumpur, Penang, and Langkawi are well-covered. East Malaysia has coverage in main towns with limited rural reach.
Vietnam, Indonesia (including Bali), and Cambodia are not on this plan's list. The Asia and Global plans include Vietnam and Indonesia, and the Global plan includes Cambodia.
Note: EU Roaming does not apply in Southeast Asia. Irish carrier standard international rates apply throughout the region.
- Thailand's resort and city areas have strong 4G from multiple carriers
- Singapore has blanket 5G across the entire city-state
- Kuala Lumpur, Penang, and Langkawi have strong 4G
- One plan covers Thailand, Malaysia, and Singapore
- EU Roaming does not apply: Irish carrier rates are standard international in Southeast Asia
- Remote beaches, jungle, and mountain areas have limited signal
- GSMA Mobile Economy Asia Pacific 2025;
- Ookla Southeast Asia Speedtest 2025
eSIM Travel Tips for Southeast Asia
Install Before You Leave Dublin
Flights from Dublin to Bangkok or Singapore connect through Heathrow, Amsterdam, or Gulf airports and take 13 to 16 hours total. Install your HelloRoam Southeast Asia eSIM at home before you leave Ireland. You land in Bangkok or Singapore and your phone connects straight away.
EU Roaming Doesn't Apply in Southeast Asia
Your Three IE, Vodafone Ireland, Eir, or GoMo plan's EU Roaming allowance applies only within the EEA. In Thailand, Malaysia, Singapore, or any Southeast Asian destination, standard international rates apply. These can add up quickly on a three-week trip. A HelloRoam Southeast Asia eSIM is the practical solution.
Thailand's Resort Areas Are Well-Connected
Bangkok, Phuket, Chiang Mai, Koh Samui, and Koh Phangan all have solid 4G from AIS, DTAC, and True Move. Resort hotel areas are generally well-covered. More remote beach coves and jungle mountain areas can be patchier. Download offline maps for any remote excursions.
WhatsApp Works Normally Throughout Southeast Asia
WhatsApp calling, messaging, and video all work normally on HelloRoam Southeast Asia eSIM data across all covered countries. No restrictions apply. Keep in touch with family in Ireland throughout your Southeast Asia trip.
Network Coverage Across Southeast Asia
Thailand: AIS, DTAC, and True Move compete across the country. AIS has the widest rural coverage. Bangkok has growing 5G.
Singapore: Singtel, StarHub, M1, and Simba provide blanket 4G and 5G. The entire city-state is covered.
Malaysia: Maxis, Celcom, Digi, and U Mobile cover the peninsula well.
- AIS (Thailand)
- Singtel (Singapore)
- Celcom (Malaysia)
Regional eSIM vs Irish Carrier Roaming for Southeast Asia
EU Roaming does not apply in Southeast Asia. Irish carrier standard international rates apply across the region. For a holiday in Thailand, Malaysia, or Singapore, a HelloRoam Southeast Asia eSIM is far more cost-effective.
| Category | HelloRoam Regional Southeast Asia eSIM Recommended | Individual country SIMs | Roaming with your carrier |
|---|---|---|---|
| Typical cost | From €3.45 total | — | — |
| Details | One plan covers Thailand, Malaysia, and Singapore. Buy before leaving Dublin. No SIM queues at Asian airports. Much better value than Three IE or Vodafone Ireland international rates for Southeast Asia. | Separate SIM for each country. Airport SIM counters have queues. Registration requirements vary. Managing multiple SIMs is inconvenient. | Three IE, Vodafone Ireland, Eir, and GoMo charge standard international rates in Southeast Asia. EU Roaming does not apply. Daily charges on a three-week Thailand trip can be significant. |
Prices approximate as of . Actual savings vary.
Best Times for Irish Travellers to Visit Southeast Asia
Thailand is best November through April during the dry season. This is perfect for Irish travellers escaping the winter months.
Irish winter escapes (November to March) align well with the dry season across much of Southeast Asia. It's when Thai resorts are busiest and most expensive.
Explore Countries in Southeast Asia
Thailand
From $3
HelloRoam offers Thailand eSIM plans for Bangkok, Phuket, and Chiang Mai. Connect the moment you land.
AIS and TrueMove H run 5G in Bangkok. Coverage reaches Thai islands but drops in rural areas.
Malaysia
From $3
HelloRoam provides eSIM data across Malaysia, from Kuala Lumpur to Penang and Langkawi.
CelcomDigi and U Mobile run 5G in Kuala Lumpur. Signal thins in Borneo's interior.
Singapore
From $3
HelloRoam provides eSIM data for Singapore. Get fast coverage across the entire city-state.
StarHub, M1, and SingTel run 5G in Singapore. MRT has full underground coverage.
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Reviews
What Our Customers Say
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
Your Southeast Asia eSIM Questions Answered
How do Irish long-haul travellers buy eSIM Southeast Asia plans for Thailand or Vietnam before flying from Dublin?
eSIM Southeast Asia plans from HelloRoam start from €3.45 and cover Thailand, Vietnam, Malaysia, Singapore, Bali, and 10+ more countries on local networks. HelloRoam delivers a QR code by email, activated at home before your long-haul flight. No roaming charges from your Irish provider, no physical SIM card, and a 180-day refund guarantee on unactivated eSIMs on every order.
What does an e-sim Southeast Asia plan include for Irish visitors island-hopping across Thailand and Bali?
A HelloRoam e-sim Southeast Asia plan gives you local data in your chosen country from €3.45, covering Thailand, Bali, Vietnam, and the full region. Activate at home before flying from Dublin so data is live on arrival. No contract, no roaming fees, and a 180-day refund guarantee on unactivated eSIMs on every prepaid order.
What is the best eSIM for Southeast Asia from Ireland?
HelloRoam is a strong choice for travellers from Ireland visiting Southeast Asia. Plans start from €3.45 and connect through our worldwide network of 212+ carriers, giving you local 4G/5G speeds in Southeast Asia. Activate via QR code in under two minutes, keep your Three Ireland, Vodafone IE or Eir number on dual SIM, and get a 180-day refund window on unactivated eSIMs. No carrier contract needed.
How much does an eSIM for Southeast Asia cost from Ireland?
A Southeast Asia eSIM starts from €3.45. Fixed data plan sizes vary by country, and this page lists every size on sale. Unlimited daily plans, where offered, charge by the day. All plans include local 4G/5G access with no overage charges and no carrier contract. Outside the EU, that compares well with what Eir or Vodafone IE charge for roaming.
Which networks does a Southeast Asia eSIM connect to?
eSIM in Southeast Asia connects to local partner networks on 4G/5G. Your phone joins a local partner network automatically on arrival, with no manual carrier selection needed. Coverage and speeds depend on the local network, so they vary from place to place.
How do I get an eSIM for Southeast Asia before flying from Ireland?
Getting your eSIM for Southeast Asia takes three steps. First, choose your plan at helloroam.com and pay in the currency you choose. Second, scan the QR code from your confirmation email in Settings under Mobile Data, then Add eSIM. Third, your eSIM 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.
Does iPhone support eSIM for Southeast Asia travel from Ireland?
Yes. iPhone XS and all newer models support your eSIM for Southeast Asia. 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. Some iPhones, like iPhone 14 and later models sold in the US, are eSIM-only with no SIM tray at all.
Does EU Roaming apply in Southeast Asia?
No. EU Roam Like At Home applies only within the EEA. In Thailand, Malaysia, Singapore, or any Southeast Asian destination, standard international roaming rates apply on your Irish carrier plan. A HelloRoam Southeast Asia eSIM is a far more cost-effective option.
Does the eSIM work in Malaysia and Singapore?
Malaysia and Singapore are both covered. Singapore has world-class 5G across the entire city-state. Kuala Lumpur, Penang, and Langkawi have strong 4G. The HelloRoam Southeast Asia eSIM connects to local networks in the main cities and tourist areas. Plans start from €3.45. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Does the eSIM work in the Philippines?
No. The Philippines is not on the Southeast Asia plan's list. The Asia and Global plans both include the Philippines, and HelloRoam also sells a separate Philippines eSIM. Southeast Asia plans start from €3.45 for Thailand, Malaysia, and Singapore.
