HelloRoam offers eSIM data plans for East Asia from S$5.32 a day. Your e SIM connects to local 4G/5G networks the moment you land, no roaming fees. Activate by QR code in under two minutes, fuss-free. Keep your Singtel, StarHub, or M1 number active on dual SIM while your e-sim handles data across 185+ countries.
- networks
212+- 5G support
5G and 4G LTE- activation
under 2 minutes
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Prepaid eSIM data plans for East Asia covering Japan, South Korea, China and Taiwan
Affordable eSIM for East Asia, starting from S$5.32. Local 4G LTE and 5G data on trusted carrier networks in East Asia. Works on all eSIM compatible handphones. Cherry blossom season in Japan, the autumn foliage circuit through South Korea, and Lunar New Year travel across China and Taiwan are peak periods for Singapore travellers. A HelloRoam eSIM for East Asia plan activates via QR code before you fly from Changi. Plans start from S$5.32 per destination on local networks across Japan, South Korea, China, and Taiwan without juggling SIM cards at each border. HelloRoam backs every order with a 180-day refund guarantee on unactivated eSIMs.
East Asia eSIM with fast 5G and 4G LTE coverage
HelloRoam East Asia eSIM covers Japan, South Korea, Taiwan, Hong Kong, and Macau on one plan. Singaporean travellers on the Tokyo-Seoul-Taipei circuit stay connected with instant data from the moment they land.
- Plans start at S$5.32 with 5G and 4G LTE speeds
- Coverage from local networks
- Instant activation in under 2 minutes
- 180-day money-back guarantee
- East Asia coverage across major cities
- Network
- 5G and 4G LTE
- Plans From
- S$5.32
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in East Asia
Follow these steps to set up your eSIM on iPhone or Android handphone. Works for any eSIM for international travel from Singapore. No replacement SIM, no store visit.
Set up an eSIM on your iPhone with the HelloRoam app
Set up an eSIM on your Android handphone with the HelloRoam app
- 1
Choose your plan and checkout online
Select a data plan for your destination and complete checkout.
2Scan the QR code
Scan the QR code to install your eSIM straight away.
- 3
Activate in minutes: ready on arrival
Your eSIM installs instantly and activates when you land.
4Manage it all from our app
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 on any unactivated eSIM within 180 days of purchase.
Learn more about our refund policyHelloRoam East Asia eSIM vs Singtel, StarHub and M1
When comparing eSIM vs a travel SIM card for East Asia, HelloRoam wins on price. It beats Singtel DataRoam, StarHub RoamEasy, and M1 international roaming add-ons. The cheapest eSIM plan starts from S$5.32, with no activation fee and a refund on unactivated eSIMs within 180 days.
| Feature comparison | HelloRoam | Local provider | Limited data eSIM |
|---|---|---|---|
| Refund on unactivated eSIMs |  Feature available |  Feature not available | Feature not available |
| 24/7 live chat support | Feature available |  Feature available | Feature available |
| $0 activation fees | Feature available | Feature not available | Feature available |
| Automatic data alerts at 80% usage | Feature available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature not available | Feature not available |
| Instant QR code delivery | Feature available | Feature not available | Feature available |
| Premium East Asia carrier networks | Feature available | Feature not available | Feature not available |
Why Singaporean Travellers Choose an e SIM for East Asia
24/7 live chat support
Need assistance at 2 am before a flight from Changi? HelloRoam support is available 24/7. Message us and a real person responds in under 2 minutes. No bots, no hold queue. Whether you need help with eSIM installation, plan changes, or troubleshooting a connection drop, the support team handles it in real time.
Best eSIM for East Asia: skip Singtel roaming charges
HelloRoam connects to local 4G/5G networks in East Asia from the moment you land, at a fraction of what Singtel, StarHub, or M1 charge for international roaming. Plans start from S$5.32 with no lock-in contract and no activation fees. You pay once and use data freely without surprise overage charges.
Keep your Singtel, StarHub, or M1 number
Keep your Singtel, StarHub, or M1 number active for calls and texts. HelloRoam handles your data through a second eSIM line on any dual SIM compatible handphone. Family and colleagues reach you on the same Singapore number while your travel data runs on a separate prepaid eSIM plan.
212+ carrier networks including East Asia
HelloRoam connects to 212+ carrier networks across 185+ countries. Fixed data and unlimited data plans available. Your handphone switches to the strongest available 4G/5G or 5G signal automatically, where offered by the local network. That means consistent speeds whether you are in a major city, a highway rest stop, or a rural area.
Data alerts before you run out
HelloRoam alerts you at 80% data usage so you are never caught mid-trip without data. Top up instantly from the app without reinstalling your eSIM or visiting a store. Additional data activates in under a minute, keeping your connection live through navigation, video calls, and streaming.
Local 4G/5G speeds
Your East Asia eSIM connects to trusted local 4G/5G networks. HelloRoam picks the strongest available signal for navigation, streaming, and video calls. You get local network speeds comparable to a prepaid SIM card purchased in-country, without the airport queue.
Regional and global eSIM plans
Travelling to multiple destinations? HelloRoam regional eSIM plans cover Southeast Asia, Europe, the Americas, and 185+ destinations in one purchase. Short holiday or long-term stay: choose fixed data or unlimited data plans. One account, no SIM swaps. A single regional plan replaces the hassle of sourcing a new local SIM card at every border crossing.
Hotspot and data sharing at no extra cost in East Asia
Share your East Asia eSIM data with a laptop or tablet using your handphone's built-in hotspot. No extra fees, no setup required. Works on all eSIM compatible devices. This is particularly useful for business travellers who need a consistent mobile broadband connection for their work laptop while abroad.
East Asia eSIM Prices in 2026
Compare HelloRoam eSIM plans for East Asia. Plans start from S$5.32 with local 4G/5G access. No Singtel or StarHub roaming surcharges.
| Number of days | Price (AUD) |
|---|---|
| 1 day | S$9.94 |
| 3 days | S$28.34 |
| 7 days | S$61.25 |
| 15 days | S$119.32 |
| 22 days | S$161.88 |
| 30 days | S$202.85 |
HelloRoam vs Other eSIM Providers for East Asia
See how HelloRoam compares to Airalo, Holafly, and other eSIM providers for East Asia travel. HelloRoam offers a refund on unactivated eSIMs within 180 days, 24/7 live chat support, and plans from S$5.32.
| Feature comparison | HelloRoam | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| Refund on unactivated eSIMs | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| 24/7 live chat support | Feature available | Feature available | Feature available | Feature not available | Feature available | Feature available |
| A$0 activation fees | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Automatic data alerts at 80% usage | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Instant QR code delivery | Feature available | Feature available | Feature available | Feature available | Feature available | Feature available |
| Premium East Asia carrier networks | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| Own branded carrier identity (SPN) | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature available |
e SIM Explained: Setting Up eSIM for East 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 East 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 East Asia
East Asia hosts three of the world's top five fastest mobile networks. Japan, South Korea, and Taiwan top global mobile network benchmarks. A HelloRoam East Asia regional eSIM connects you to these premium networks for the popular Tokyo-Seoul-Taipei travel circuits that Singaporeans take year-round.
Japan has near-universal network coverage including on the Shinkansen bullet train, all Tokyo subway lines, and in rural mountain areas. NTT Docomo, SoftBank, and au operate 5G in all major cities. Japan is consistently Singapore's most searched and booked East Asia destination.
South Korea has one of the world's highest 5G penetration rates. SK Telecom, KT, and LG Uplus operate dense 5G networks in Seoul, Busan, and Incheon. Coverage on the Seoul Metro is excellent throughout all lines. Jeju Island has strong 4G.
Taiwan connects to Chunghwa Telecom, Taiwan Mobile, and Far EasTone. Taipei's MRT has full underground coverage. Taroko Gorge, Sun Moon Lake, and Kenting are well-served.
Hong Kong has some of the world's densest mobile coverage. All MTR lines and outdoor areas have excellent 4G and 5G. Hong Kong is a popular destination in its own right and also a transit hub for Singaporeans connecting to other East Asian destinations.
Note that mainland China is not included in this plan.
- Japan and South Korea rank among the world's top fastest mobile networks
- All Tokyo and Seoul subway lines have full coverage including underground
- Japan's Shinkansen has in-train 4G and 5G throughout the route
- Hong Kong has near-total coverage across the entire territory
- Mongolia outside Ulaanbaatar has very limited coverage
- China mainland requires a separate plan
- Ookla Global Speedtest Index 2025;
- GSMA 2026
eSIM Travel Tips for East Asia
Japan and South Korea Top the Singapore Travel Charts
Japan and South Korea are the most booked East Asia destinations by Singaporean travellers. Both countries deliver premium connectivity that matches or exceeds what you experience in Singapore. The Tokyo-Seoul combination on one trip is a popular Singaporean travel circuit.
Japan's Shinkansen Has Full Coverage Throughout
Japan's Shinkansen bullet train has 4G and 5G coverage throughout the route. You can stream video, work, or video call from Tokyo to Osaka without interruption. Japan's indoor coverage in shopping malls, arcades, and underground stations is exceptional.
Hong Kong Is Close From Singapore
Flights from Singapore to Hong Kong take about 3.5 hours. Hong Kong has some of the world's densest 4G and 5G coverage across its compact territory. The MTR system has full coverage. Your HelloRoam East Asia eSIM activates automatically when you land at HKIA.
Taiwan Is Worth Adding to Your East Asia Circuit
Taipei's food scene, night markets, and day trips to Taroko Gorge are well-known among Singaporean travellers. Taipei's MRT has full underground coverage from Chunghwa Telecom. The airport MRT from Taoyuan Airport to the city centre has coverage throughout.
Check Phone Band Compatibility for Japan
Japan uses some LTE frequencies not found in all phones. Most modern iPhones and flagship Android devices support Japanese network bands. Older or budget devices may not fully connect to all Japanese bands. Check your phone's LTE band compatibility before travel.
Network Coverage Across East Asia
Japan: NTT Docomo, SoftBank, and au operate nationwide 5G with 4G LTE virtually everywhere including rural Japan. Japan's network quality is consistently a global benchmark.
South Korea: SK Telecom, KT, and LG Uplus have deployed some of the world's densest 5G networks. Seoul's 5G penetration is among the highest globally.
Taiwan: Chunghwa Telecom, Taiwan Mobile, and Far EasTone operate competitive 4G and 5G. Taipei has excellent MRT and urban coverage.
Hong Kong: PCCW, HKT, CSL, and others cover this compact territory completely. Hong Kong is one of the world's most densely networked cities.
Mongolia: Coverage primarily in Ulaanbaatar and main highways. Vast steppe and Gobi Desert have no coverage.
- NTT Docomo (Japan)
- SK Telecom (South Korea)
- KT (South Korea)
- Chunghwa Telecom (Taiwan)
- PCCW (Hong Kong)
- Mongolia Telecom
Regional eSIM vs Local SIMs vs Singapore Carrier Roaming for East Asia Travel
East Asia is a premium travel destination for Singaporeans. Singapore carrier day passes for Japan and South Korea carry high daily charges. A HelloRoam East Asia regional eSIM offers better value for trips of 5 or more days.
| Category | HelloRoam Regional East Asia eSIM Recommended | Airport SIMs in Japan or South Korea | Singapore carrier international roaming (Singtel/StarHub/M1/Simba) |
|---|---|---|---|
| Typical cost | — | — | — |
| Details | One plan covers Japan, South Korea, Taiwan, Hong Kong, and more. Buy before departing Changi. No airport SIM queues in Tokyo or Seoul. Better value than Singtel, StarHub, M1, or Simba daily roaming passes for Japan. | Airport SIM counters in Tokyo and Seoul have queues. Tourist SIMs require passport registration. Separate SIMs needed for each country. Total cost across Japan, South Korea, and Taiwan is significant. | Singtel, StarHub, M1, and Simba day passes for Japan and South Korea carry high daily charges. A 7-day Japan trip at day pass rates adds up quickly. A HelloRoam East Asia regional eSIM is typically more cost-effective. |
Prices approximate as of . Actual savings vary.
Best Times for Singaporean Travellers to Visit East Asia
Japan's spring cherry blossom season (late March to early May) and autumn foliage (October to November) are the most popular periods. Both are heavily booked by Singaporeans and hotels sell out months in advance. Summer (June to August) is hot and humid. Winter is mild in Tokyo by northern hemisphere standards.
South Korea follows similar seasonal patterns. Spring (March to April) and autumn (October to November) are the most popular. Summer is hot with a monsoon season. Winter in Seoul is cold but manageable for urban travel.
Taiwan is pleasant year-round. Spring and autumn are most comfortable. Typhoon season runs June through October.
Hong Kong is best October through April. Singapore's school holidays in June and November-December drive peak bookings to all East Asia destinations.
Explore Countries in East Asia
Japan
From $3
HelloRoam covers Japan with 4G/5G plans across Tokyo, Osaka, and Kyoto. Stay connected without swapping SIM cards.
Activate before landing. NTT docomo 5G covers cities. Airport WiFi has 30-minute limits.
China
From $3
Get HelloRoam data in China covering Shanghai, Beijing, and more. Skip the hassle of local SIM cards.
China Mobile and Unicom run 5G in major cities. Download WeChat and maps offline before crossing.
South Korea
From $3
HelloRoam offers South Korea eSIM plans for Seoul, Busan, and Jeju Island. Connect on landing.
LG U+ and SKTelecom run 5G across South Korea. Seoul Metro has full underground coverage.
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Reviews
Trusted by Singaporean Travellers
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
FAQs About eSIM in East Asia
How much does an e-sim East Asia cost for a Japan and South Korea trip from Singapore?
e-sim East Asia plans from HelloRoam for Japan and South Korea start at S$5.32 per country, with data volume options for each destination. Activate each plan before you fly from Changi. No physical SIM card needed and no contract.
Which East Asia e SIM card suits Singaporean travellers visiting Tokyo, Seoul, and Taipei?
An East Asia e SIM card for a Tokyo, Seoul, and Taipei trip uses per-country plans on local networks from S$5.32 per destination. Set up takes two minutes before you depart Singapore so data is ready from the moment you land at Narita, Incheon, or Taipei Taoyuan Airport. No contract.
Which eSIM is best for Singaporeans travelling to East Asia?
For trips to East Asia, HelloRoam is a simple eSIM choice. Plans start from S$5.32 in SGD with access to local 4G/5G networks across 212+ carrier networks. 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 refund on unactivated eSIMs within 180 days and 24/7 live chat support.
How much does a East Asia eSIM cost compared to Singtel and StarHub roaming?
A East Asia eSIM from HelloRoam costs from S$5.32 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 East 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.
Which local mobile networks does an eSIM use in East Asia for Singapore travellers?
An eSIM for East 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 East Asia.
How do I set up a HelloRoam eSIM before departing Changi Airport?
Buy your East 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.
Does my iPhone or Android handphone support a East Asia eSIM?
iPhone XS and all newer models support HelloRoam eSIM in East 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.
Does the East Asia eSIM cover Japan and South Korea?
Japan and South Korea are both covered on the HelloRoam East Asia regional plan. NTT Docomo, SoftBank, and au in Japan, and SK Telecom, KT, and LG Uplus in South Korea all deliver world-class 5G speeds. HelloRoam eSIM for HelloRoam East Asia eSIM connects to local network with 5G coverage across major tourist and urban areas. Plans start from S$5.32. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Is there coverage in Tokyo?
Tokyo has near-total 4G and 5G coverage from NTT Docomo, SoftBank, and au. All Tokyo subway lines have coverage including underground stations. Shopping malls, train stations, and outdoor areas are all covered. HelloRoam eSIM for HelloRoam East Asia eSIM connects to local network with 5G coverage across major tourist and urban areas. Plans start from S$5.32. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Does the East Asia eSIM work in Seoul?
Seoul has excellent 5G coverage throughout the city from SK Telecom, KT, and LG Uplus. Seoul's entire metropolitan subway has 5G coverage. Busan and Jeju Island are also well-served. HelloRoam eSIM for HelloRoam East Asia eSIM connects to local network with 5G coverage across major tourist and urban areas. Plans start from S$5.32. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
