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HelloRoam's Southeast Asia eSIM starts from €3.45 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.
210+
local networks
4G LTE with 5G in capitals
5G support
2 minutes
to activate
![Southeast Asia [[networkType]] network speeds](/icons/figma-2026/stats-speedometer.svg){kind=icon}
Last updated
Southeast Asia eSIM coverage on local networks
Cheap eSIM for Southeast Asia, starting from €3.45. Local 4G/5G data on top carrier networks in Southeast Asia. Works on all eSIM compatible phones. 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 fast 4G LTE with 5G in capitals coverage
HelloRoam Southeast Asia eSIM covers Thailand, Malaysia, Singapore, Vietnam, Bali, Philippines, Cambodia, and more on one plan. Irish travellers on the most popular Asian holiday circuits stay connected without buying SIMs at each destination.
- 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 money-back guarantee
- Southeast Asia coverage across major cities
- Network
- 4G LTE with 5G in capitals
- Plans From
- €3.45
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in Southeast Asia
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 Southeast Asia eSIM vs Three Ireland, Vodafone IE and Eir roaming
Comparing eSIM vs a travel SIM card for Southeast Asia? 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 €3.45 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 Southeast Asia carrier networks | | | |
Why Travellers from Ireland Use HelloRoam e-sim for Southeast Asia
HelloRoam vs Other eSIM Providers for Southeast Asia
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 Southeast Asia 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 Southeast Asia carrier networks | | | | | | |
| Own branded carrier identity (SPN) | | | | | | |
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.
Bali has solid 4G in Seminyak, Ubud, Canggu, and Kuta from Telkomsel. Vietnam's Ho Chi Minh City and Hanoi have strong 4G. Cambodia's Phnom Penh and Siem Reap are well-served.
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
- Bali's tourist areas have solid coverage
- Vietnam's major cities have strong 4G
- EU Roaming does not apply: Irish carrier rates are standard international in Southeast Asia
- Remote beaches, jungle, and mountain areas have limited signal
SourcesGSMA 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, Singapore, or Bali 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 at Suvarnabhumi or Ngurah Rai Airport 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 covers 30 EEA countries. In Thailand, Bali, Vietnam, 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.
Bali Is Reliable in Main Tourist Areas
Seminyak, Ubud, Canggu, Kuta, and Nusa Dua all have reliable 4G from Telkomsel. Ubud's rice terraces and Uluwatu area are well-covered. Remote eastern Bali and inland mountain areas can be patchier. Bali is a brilliant destination and the connectivity has improved dramatically in recent years.
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.
Indonesia: Telkomsel leads with widest coverage. Bali and Java are well-served.
Vietnam: Viettel has strong rural reach. Ho Chi Minh City and Hanoi have strong 4G.
Philippines: PLDT and Globe Telecom dominate. Manila and Cebu have solid 4G.
Cambodia: Smart and Metfone cover main cities. Rural areas are more limited.
- AIS (Thailand)
- Network carrier
- VViettel (Vietnam)
- Network carrier
- Singtel (Singapore)
- Network carrier
- Telkomsel (Indonesia)
- Network carrier
- Globe (Philippines)
- Network carrier
- CCelcom (Malaysia)
- Network carrier
Regional eSIM vs Irish Carrier Roaming for Southeast Asia
EU Roaming does not apply in Southeast Asia. Irish carrier standard international rates apply in Thailand, Bali, Vietnam, and all Southeast Asian countries. A HelloRoam Southeast Asia eSIM is far more cost-effective for any Southeast Asia holiday.
Recommended—
One plan covers Thailand, Malaysia, Bali, Vietnam, Singapore, and more. 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 plus Bali trip can be significant.
| Category | Recommended | Individual country SIMs | Irish carrier standard international roaming |
|---|---|---|---|
| Typical cost | — | — | — |
| Details | One plan covers Thailand, Malaysia, Bali, Vietnam, Singapore, and more. 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 plus Bali trip can be significant. |
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. Bali's dry season is April through October. Vietnam's south is best November through April.
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.
Your Southeast Asia eSIM Questions Answered
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.
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.
HelloRoam is a top-rated eSIM for travellers from Ireland visiting Southeast Asia. Plans start from €3.45 and connect through our worldwide network of 199+ 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 enjoy a 180-day refund window on unactivated eSIMs. No daily roaming charge and no carrier contract.
A Southeast Asia eSIM starts from €3.45. 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 Southeast Asia 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 Southeast Asia, not the premium daily rates Eir or Vodafone IE charge for international roaming.
Getting your eSIM for Southeast Asia 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 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. iPhone 14 and later are eSIM-only with no SIM tray needed.
No. EU Roam Like At Home applies only within the EEA. In Thailand, Bali, Singapore, Vietnam, 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.
Thailand and Bali (Indonesia) are both covered on the HelloRoam Southeast Asia regional plan. Bangkok, Phuket, Seminyak, Ubud, and all main tourist areas are connected. HelloRoam eSIM for HelloRoam Southeast Asia eSIM connects to local network with 5G coverage across major tourist and urban areas. Plans start from €3.45. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Vietnam's Ho Chi Minh City, Hanoi, Da Nang, and Hoi An have strong 4G. Ha Long Bay has basic signal. Remote Sapa has coverage in main town. HelloRoam eSIM for HelloRoam Southeast Asia eSIM connects to local network with 5G coverage across major tourist and urban areas. Plans start from €3.45. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
