HelloRoam offers a East Asia eSIM from €3.58, with access to 212+ carrier networks across 185+ countries. Your e SIM taps into local 4G/5G networks the moment you land, 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 e-sim handles the data.
- local networks
212+- 5G support
5G and 4G LTE- to activate
2 minutes
Last updated
East Asia eSIM coverage on local networks
Cheap eSIM for East Asia, starting from €3.58. Local 4G/5G data on top carrier networks in East Asia. Works on all eSIM compatible phones. East Asia draws Irish long-haul travellers to Tokyo's Shibuya Crossing, Seoul's K-culture quarter, Beijing's Forbidden City, and Hong Kong's Victoria Harbour. HelloRoam's East Asia eSIM plans start from €3.58 and cover your chosen country on local networks. Activate by QR code at home before flying from Dublin. No roaming charges, no contract. GDPR-compliant checkout, 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. Irish travellers on the Tokyo-Seoul-Taipei circuit stay connected from the moment they land.
- Plans start at €3.58 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
- €3.58
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in East 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 East Asia eSIM vs Three Ireland, Vodafone IE and Eir roaming
Comparing eSIM vs a travel SIM card for East 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 €3.58 with instant QR activation and a 180-day refund on unactivated eSIMs.
| Feature comparison | HelloRoam | Irish carrier roaming add-on | Limited data eSIM |
|---|---|---|---|
| 180-day refund policy |  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 |
| Free hotspot and data sharing | 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 Travellers from Ireland Use HelloRoam e-sim for East Asia
24/7 live chat support
Stuck at 2am in Bangkok or sorting things out the night before a Dublin Airport departure? HelloRoam support answers on live chat, WhatsApp, or email, 24/7, with a real person replying in under five minutes. Connectivity issues don't wait for office hours, and neither does our team, wherever you've landed.
Best eSIM for East Asia
Travel to East Asia with a prepaid eSIM card that connects to local 4G/5G networks. Buy your plan, scan the QR code, and get online when you land. No Eir or Vodafone IE roaming fees, no SIM swap, no airport kiosk queue. A digital SIM profile installs in minutes so you arrive connected without touching a plastic card.
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 you use local data rates.
212+ partner networks worldwide
HelloRoam connects to 212+ carrier networks across 185+ countries. Your phone switches automatically to the strongest available 4G/5G signal. That breadth of mobile network coverage means reliable internet access from European cities to long-haul destinations in Asia and the Americas.
Usage alerts before you run out
We send you an alert at 80% usage so you never hit a surprise data cap mid-trip. Top up instantly from the app without reinstalling your eSIM. Real-time data monitoring keeps your allowance in view so you stay in control of your spend from day one to the last day of your holiday.
Local network speeds in East Asia
HelloRoam eSIM connects to local 4G/5G networks in East Asia at local data prices. You get fast speeds for maps, video calls, and streaming without paying Eir or Vodafone IE daily roaming rates. Plugging into the destination's own mobile infrastructure means you pay what residents pay, not what Irish carriers charge for international add-ons.
Global and regional plans
Heading to more than one country? HelloRoam regional plans cover Europe, Asia, the Americas, and 185+ destinations in one e-sim 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 East Asia
Share your East 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 East Asia
HelloRoam, the best eSIM East Asia. Compare plans and find the right data for your trip.
| Number of days | Price |
|---|---|
| 1 day | €6.69 |
| 3 days | €19.07 |
| 7 days | €41.21 |
| 15 days | €80.28 |
| 22 days | €108.91 |
| 30 days | €136.47 |
HelloRoam vs Other eSIM Providers for East 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 East Asia holiday.
| Feature comparison | HelloRoam | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund policy | 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 |
| €0 activation fees | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Free hotspot and data sharing | 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 |
What Is an e SIM? How eSIM Works in East 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 East 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 East Asia
East Asia hosts three of the world's top five fastest mobile networks. Japan, South Korea, and Taiwan consistently top global mobile network benchmarks.
Japan has near-universal network coverage including on the Shinkansen bullet train, all Tokyo subway lines, and even in rural mountain areas. NTT Docomo, SoftBank, and au operate 5G in all major cities. Japan's indoor coverage is exceptional.
South Korea's SK Telecom, KT, and LG Uplus have dense 5G in Seoul, Busan, and across the country. 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 and Sun Moon Lake 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.
Note: EU Roaming Regulation does not apply in East Asia. Your Irish carrier charges standard international rates. A HelloRoam East Asia eSIM is a much more cost-effective option.
- Japan, South Korea, and Taiwan are among the world's fastest mobile networks
- All Tokyo and Seoul subway lines have full coverage
- Japan's Shinkansen has in-train 4G and 5G throughout
- Hong Kong has near-total coverage across the territory
- EU Roaming does not apply: Irish carrier rates are standard international in East Asia
- China mainland requires a separate plan
- Ookla Global Speedtest Index 2025;
- GSMA 2026
eSIM Travel Tips for East Asia
Install Before Your Flight to Tokyo or Seoul
Flights from Dublin to Tokyo or Seoul typically connect through Heathrow, Amsterdam, or Gulf hubs. Install your HelloRoam East Asia eSIM at home before you leave Ireland. You land in Tokyo or Seoul and your phone connects immediately. No airport SIM shop needed.
Japan Is One of the World's Best-Connected Countries
Japan's Shinkansen bullet train has 4G and 5G in-train coverage throughout. Tokyo's entire subway has coverage including all underground stations. Even rural areas in Kyushu, Tohoku, and Hokkaido generally have 4G. It's a joy to travel in a country this well-connected.
Seoul's 5G Is Extraordinary
Seoul has some of the world's densest 5G coverage. SK Telecom, KT, and LG Uplus compete aggressively. The Seoul Metro has 5G on all lines. Busan and Jeju Island are also very well served. As an Irish traveller accustomed to reasonable but not world-leading mobile speeds at home, South Korea feels impressively fast.
Hong Kong Is a Compact, Well-Connected City
Hong Kong's entire territory has near-total 4G and 5G from multiple operators. The MTR has full coverage throughout. The Airport Express from HKIA to Central takes 24 minutes with coverage the whole way. A great city to start or end an East Asia trip.
EU Roaming Doesn't Apply Anywhere in East Asia
Your Three IE, Vodafone Ireland, Eir, or GoMo plan's EU Roaming allowance applies only within the EEA. In Japan, South Korea, Hong Kong, or Taiwan, standard international roaming rates apply. These can be very expensive for a 10 to 14 day trip. A HelloRoam East Asia eSIM is a much better value option.
Network Coverage Across East Asia
Japan: NTT Docomo, SoftBank, and au operate nationwide 5G and near-universal 4G LTE. Subway and rail coverage is standard practice.
South Korea: SK Telecom, KT, and LG Uplus have the world's densest 5G deployments. Seoul's 5G penetration is extraordinary.
Taiwan: Chunghwa Telecom, Taiwan Mobile, and Far EasTone provide competitive 4G and 5G. Taipei MRT has full coverage.
Hong Kong: PCCW, HKT, CSL, and others cover this compact territory completely.
Mongolia: Coverage primarily in Ulaanbaatar and main highways. Vast steppe areas have no coverage.
- NTT Docomo (Japan)
- SK Telecom (South Korea)
- KT (South Korea)
- Chunghwa Telecom (Taiwan)
- PCCW (Hong Kong)
- Mongolia Telecom
Regional eSIM vs Irish Carrier Roaming for East Asia Travel
EU Roaming does not apply in East Asia. Irish carrier standard international rates for Japan and South Korea can be expensive. A HelloRoam East Asia regional eSIM offers substantially better value for any East Asia trip.
| Category | HelloRoam Regional East Asia eSIM Recommended | Airport SIMs in Japan or South Korea | Irish carrier standard international roaming |
|---|---|---|---|
| Typical cost | — | — | — |
| Details | One plan covers Japan, South Korea, Taiwan, Hong Kong, and more. Buy before leaving Dublin. No airport SIM queues in Tokyo or Seoul. Much better value than Three IE or Vodafone Ireland international roaming in East Asia. | Airport SIM counters have queues and require passport registration. Separate SIMs for each country. Total cost across Japan, South Korea, and Taiwan is significant. | Three IE, Vodafone Ireland, Eir, and GoMo charge standard international roaming rates in East Asia. EU Roaming does not apply. A 10-day Japan trip on carrier roaming rates can cost several hundred euros in data charges. |
Prices approximate as of . Actual savings vary.
Best Times for Irish 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 and most visually stunning times to visit. Both are heavily booked, especially by Irish travellers who discover Japan through travel content. South Korea follows similar seasonal patterns.
Taiwan is pleasant year-round. Hong Kong is best October through April.
Irish summer holidays in June and July fall during Japan's hot and humid summer, which is manageable for most Irish travellers who find any warmth a novelty.
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.
Showing slide 1 of 3
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 East Asia eSIM Questions Answered
How do Irish visitors buy East Asia eSIM plans for Japan or South Korea before flying from Dublin?
East Asia eSIM plans from HelloRoam start from €3.58 and cover Japan, South Korea, China, Hong Kong, and Taiwan 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 East Asia plan include for Irish visitors travelling Japan and South Korea on one trip?
A HelloRoam e-sim East Asia plan gives you local data in your chosen East Asian country from €3.58, covering Japan, South Korea, China, or Hong Kong. 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 included.
What is the best eSIM for East Asia from Ireland?
HelloRoam is a top-rated eSIM for travellers from Ireland visiting East Asia. Plans start from €3.58 and connect through our worldwide network of 212+ carriers, giving you local 4G/5G speeds in East 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.
How much does an eSIM for East Asia cost from Ireland?
A East Asia eSIM starts from €3.58. 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.
Which networks does a East Asia eSIM connect to?
eSIM in East 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 East Asia, not the premium daily rates Eir or Vodafone IE charge for international roaming.
How do I get an eSIM for East Asia before flying from Ireland?
Getting your eSIM for East 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.
Does iPhone support eSIM for East Asia travel from Ireland?
Yes. iPhone XS and all newer models support your eSIM for East 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.
Does EU Roaming apply in East Asia?
No. EU Roam Like At Home applies only within the EEA. In Japan, South Korea, Taiwan, or Hong Kong, standard international roaming charges apply on your Irish carrier plan. A HelloRoam East Asia eSIM is a much better value option for data.
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 and KT in South Korea 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 €3.58. 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. All subway lines including underground stations have coverage. Shopping malls, train stations, and outdoor areas are all covered. Japan's network quality is globally exceptional. HelloRoam eSIM for HelloRoam East Asia eSIM connects to local network with 5G coverage across major tourist and urban areas. Plans start from €3.58. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
