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An eSIM for Southeast Asia from HelloRoam starts at S$5.13 as a full plan, with access to 199+ carrier networks across 185+ countries. Activate via QR code in under two minutes on any eSIM compatible phone. Keep your Singtel, StarHub, or M1 number active on dual SIM.
199+
networks
4G LTE with 5G in capitals
5G support
under 2 minutes
activation
![[[networkType]] network speed](/icons/figma-2026/stats-speedometer.svg){kind=icon}
Updated
Unlimited data eSIM Southeast Asia plans covering Thailand, Vietnam, Indonesia and Malaysia
Affordable eSIM for Southeast Asia, starting from S$5.13. Local 4G LTE and 5G data on trusted carrier networks in Southeast Asia. Works on all eSIM compatible handphones. Bangkok, Bali, Ho Chi Minh City, and Kuala Lumpur are all just a few hours from Changi, and managing separate local SIM cards for each Southeast Asian destination adds friction to every border crossing. HelloRoam gives Singapore travellers per-country plans that activate before you fly, with data ready from every arrival gate across 10+ ASEAN destinations from S$5.13. HelloRoam backs every order with a 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, Indonesia, Vietnam, Philippines, Cambodia, and more on one plan. Singaporean travellers on short-haul regional trips stay connected without buying SIMs at each destination.
- Plans start at S$5.13 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
- S$5.13
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in Southeast Asia
Select a data plan for your destination and complete checkout.
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.
Select a data plan for your destination and complete checkout.
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.
Trip changed? No worries, we've got you covered!
Plans can change anytime, and that's fine. With HelloRoam, you can request a refund for your eSIM within 180 days of purchase.
Learn more about our refund policyHelloRoam Southeast Asia eSIM vs Singtel, StarHub and M1
When comparing eSIM vs a travel SIM card for Southeast Asia, HelloRoam wins on price. It beats Singtel DataRoam, StarHub RoamEasy, and M1 international roaming add-ons. The cheapest eSIM plan starts from S$5.13, with no activation fee and a 180-day refund on unactivated eSIMs.
| Feature |  | Local provider | Limited data eSIM |
|---|---|---|---|
| 180-day refund (unactivated eSIMs) |  |  | |
| 24/7 live chat support | |  | |
| $0 activation fees | | | |
| Automatic data alerts at 80% usage | | | |
| No data overage charges | | | |
| Instant QR code delivery | | | |
| Premium Southeast Asia carrier networks | | | |
Why Singaporean Travellers Choose an e SIM for Southeast Asia
HelloRoam vs Other eSIM Providers for Southeast Asia
See how HelloRoam compares to Airalo, Holafly, and other eSIM providers for Southeast Asia travel. Singaporean travellers choose HelloRoam for the industry-leading purchase protection guarantee, 24/7 live chat support, and competitive pricing from S$5.13.
| Feature comparison | | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund (unactivated eSIMs) | | | | | | |
| 24/7 live chat support | | | | | | |
| A$0 activation fees | | | | | | |
| Automatic data alerts at 80% usage | | | | | | |
| No data overage charges | | | | | | |
| Instant QR code delivery | | | | | | |
| Premium Southeast Asia carrier networks | | | | | | |
| Own branded carrier identity (SPN) | | | | | | |
e SIM Explained: Setting Up eSIM for Southeast Asia
An eSIM card is a digital SIM built directly into your handphone. There is no physical chip and no SIM tray to deal with. Scan a QR code to activate your e SIM in under 2 minutes on any eSIM compatible iPhone or Android. An eSIM for Southeast Asia works as a prepaid data plan with no airport SIM counter, no replacement SIM card, and no carrier contract. Follow the step-by-step setup guide to get connected before your flight from Changi. guide
eSIM Coverage Guide for Singaporean Travellers in Southeast Asia
Southeast Asia's connectivity ranges from Thailand and Malaysia's strong 4G to Singapore's own world-class 5G. As a Singaporean traveller, you typically experience the region's best connectivity at home. Here is what to expect at popular regional destinations.
Thailand is Singapore's most popular short-haul international destination. Bangkok, Phuket, Chiang Mai, Koh Samui, and all main resort areas have strong 4G from AIS, DTAC, and True Move.
Malaysia is Singapore's nearest neighbour with a direct land crossing. Kuala Lumpur, Penang, Johor Bahru, and Langkawi are all well-covered by Maxis, Celcom, and Digi.
Indonesia's Bali has solid 4G in Seminyak, Ubud, Canggu, Kuta, and Nusa Dua from Telkomsel. Jakarta is well-covered. Lombok has coverage in main towns. Remote island areas and inland Kalimantan are limited.
Vietnam's Ho Chi Minh City, Hanoi, Da Nang, and Hoi An have strong 4G from Viettel, Mobifone, and Vinaphone. Ha Long Bay boat areas have basic signal.
Cambodia's Phnom Penh and Siem Reap are well-served. The Philippines' Manila and Cebu have 4G from PLDT and Globe Telecom.
Note: Singapore itself is not typically included as a destination in Southeast Asia regional eSIM plans since you would be purchasing from Singapore.
- Thailand's resort and city areas have strong 4G from multiple carriers
- Malaysia is well-covered including the Singapore-KL corridor
- Bali's tourist areas have solid 4G from Telkomsel
- Vietnam's major cities have strong 4G
- Remote beaches, jungle, and mountain areas have limited signal
- Download offline maps before any remote excursions from Changi
SourcesGSMA Mobile Economy Asia Pacific 2025; Ookla Southeast Asia Speedtest 2025
eSIM Travel Tips for Southeast Asia
Install Before You Leave Changi
Install your HelloRoam Southeast Asia eSIM at home or at Changi over Wi-Fi before your departure. Short-haul flights to Bangkok, Bali, Kuala Lumpur, and Ho Chi Minh City depart frequently from Changi. You land at your destination and your phone connects to the local carrier immediately.
Bangkok Is Reliably Well-Connected
Bangkok has strong 4G throughout the city from AIS, DTAC, and True Move. The BTS Skytrain and MRT have coverage throughout. Suvarnabhumi and Don Mueang airports are both well-connected. Bangkok is typically the strongest mobile coverage environment after Singapore in the region.
Bali's Tourist Areas Have Solid Coverage
Seminyak, Ubud, Canggu, Kuta, and Nusa Dua all have reliable 4G from Telkomsel. Popular day trip locations like the Tegalalang Rice Terraces are covered in main areas. More remote eastern Bali and inland areas can be patchier.
Kuala Lumpur Is Easy From Singapore
KL is a popular short trip from Singapore, reachable by flight in 50 minutes or by bus in 4 to 5 hours. KLCC, Bukit Bintang, and KL Sentral are all well-covered by Maxis, Celcom, and Digi. Your HelloRoam Southeast Asia eSIM works on both sides of the causeway.
WhatsApp Works Normally Throughout Southeast Asia
WhatsApp calling, messaging, and video are fully functional across all Southeast Asian countries on HelloRoam eSIM data. No VoIP restrictions apply in Thailand, Malaysia, Indonesia, Vietnam, or the Philippines. Stay in touch with family and colleagues in Singapore without any restrictions.
Network Coverage Across Southeast Asia
Thailand: AIS, DTAC, and True Move compete across the country. AIS has the widest rural reach. Bangkok has growing 5G.
Malaysia: Maxis, Celcom, Digi, and U Mobile cover the peninsula. East Malaysia (Sabah, Sarawak) has improving urban coverage.
Indonesia: Telkomsel leads with widest coverage. Indosat and XL Axiata compete in urban areas. Bali and Java are well-served. Outer islands vary.
Vietnam: Viettel has excellent rural reach by regional standards. Mobifone and Vinaphone are the other main carriers.
Philippines: PLDT and Globe Telecom dominate. DITO is growing. Manila and Cebu have solid 4G.
Cambodia: Smart and Metfone cover Phnom Penh and Siem Reap well. Rural and border areas are more limited.
Myanmar: MPT and Ooredoo Myanmar have basic urban 4G. Coverage is improving but inconsistent.
- 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 Local SIMs vs Singapore Carrier Roaming for Southeast Asia
For multi-country Southeast Asia trips, a regional eSIM offers better value than buying SIMs at each destination. Singapore carrier day passes for Southeast Asian countries carry per-day charges that accumulate on longer trips.
Recommended—
One plan covers Thailand, Malaysia, Bali, Vietnam, and more. Buy before departing Changi. No SIM queues at Suvarnabhumi or Ngurah Rai. Better value than Singapore carrier day passes for multi-country trips.
—
Separate SIM for each country. Airport SIM counters have queues. Managing multiple SIMs is inconvenient on a multi-country circuit.
—
Singtel, StarHub, M1, and Simba day passes for Southeast Asian destinations carry per-day charges. A two-week Thailand plus Bali trip at day pass rates adds up. A regional eSIM is typically more cost-effective.
| Category | Recommended | Individual country SIMs | Singapore carrier international roaming |
|---|---|---|---|
| Typical cost | — | — | — |
| Details | One plan covers Thailand, Malaysia, Bali, Vietnam, and more. Buy before departing Changi. No SIM queues at Suvarnabhumi or Ngurah Rai. Better value than Singapore carrier day passes for multi-country trips. | Separate SIM for each country. Airport SIM counters have queues. Managing multiple SIMs is inconvenient on a multi-country circuit. | Singtel, StarHub, M1, and Simba day passes for Southeast Asian destinations carry per-day charges. A two-week Thailand plus Bali trip at day pass rates adds up. A regional eSIM is typically more cost-effective. |
Best Times for Singaporean Travellers to Visit Southeast Asia
Thailand is best November through April in the dry season. Bali's dry season is April through October. Vietnam's north is best October through April.
Singapore school holidays in June and November-December drive peak bookings to Thailand, Bali, and the region. Advanced booking is recommended during these periods.
FAQs About eSIM in Southeast Asia
A HelloRoam eSIM in Southeast Asia plan starts at S$5.13 per country, depending on data volume and duration. Activate each country before you fly from Changi. No physical SIM card needed and no contract.
eSIMs Southeast Asia plans from HelloRoam start at S$5.13 on Local network provider 4G/5G networks. Set up takes two minutes per destination before your Changi departure so data is ready from the moment you land at each airport. No contract.
For Singaporean travellers heading to Southeast Asia in 2026, HelloRoam is the top-rated eSIM choice. Plans start from S$5.13 in SGD with access to local 4G/5G networks across a wide carrier partnership spanning 185+ countries. Activate via QR code in under 2 minutes before departing from Changi Airport. Your Singtel, StarHub, or M1 number stays active through dual SIM while HelloRoam handles data abroad. You get a 180-day refund on unactivated eSIMs and 24/7 live chat support.
A Southeast Asia eSIM from HelloRoam costs from S$5.13 for the full plan. Compare that to Singtel DataRoam daily passes and StarHub RoamEasy rates, which typically cost S$15 to S$30 per day. HelloRoam connects to local networks in Southeast Asia at local data prices, with no daily roaming surcharges and no carrier contract. All plans include local 4G/5G access with no overage charges.
An eSIM for Southeast Asia from HelloRoam connects to local 4G/5G carrier networks. Your handphone picks the strongest available signal the moment you land. Coverage spans major cities, highways, and most rural areas. HelloRoam has direct partnerships with local networks globally, so you get data speeds comparable to a local prepaid SIM card in Southeast Asia.
Buy your Southeast Asia eSIM before you leave Singapore in three steps. First, select your plan at helloroam.com and complete checkout in SGD. Second, open your handphone Settings, tap Add eSIM or Add Mobile Plan, and scan the QR code from your email. Third, your eSIM installs in under 2 minutes. Set it up the night before your flight from Changi and land connected.
iPhone XS and all newer models support HelloRoam eSIM in Southeast Asia. iPhone 13 and later models support dual eSIM, so your Singtel or StarHub line stays active for calls while HelloRoam handles travel data. For Android, Samsung Galaxy S20 and newer, Google Pixel 3 and later, and most 2019+ Android handphones support eSIM. Check your handphone Settings for an Add eSIM option to confirm compatibility.
Thailand and Indonesia (including Bali) are both covered on the HelloRoam Southeast Asia regional plan. Bangkok, Phuket, Chiang Mai, 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 S$5.13. 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 from Viettel, Mobifone, and Vinaphone. Ha Long Bay has basic signal. Remote Sapa has coverage in town. HelloRoam eSIM for HelloRoam Southeast Asia eSIM connects to local network with 5G coverage across major tourist and urban areas. Plans start from S$5.13. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Malaysia is covered. Kuala Lumpur, Penang, and Johor Bahru have strong 4G from Maxis, Celcom, and Digi. The KL Sentral transport hub and KLCC area are well-covered. HelloRoam eSIM for HelloRoam Southeast Asia eSIM connects to local network with 5G coverage across major tourist and urban areas. Plans start from S$5.13. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
