eSIM for East Asia from $1.14

HelloRoam is a global eSIM provider offering instant mobile data in 185+ countries. Buy prepaid travel eSIM plans with no extra fees, no contracts, and instant activation on any eSIM-compatible device.

East Asia eSIM with instant activation - international travel data plans - no extra fees - 5G mobile network

East Asia eSIM card data plans for international travel

Package details

The cheapest eSIM for East Asia starts from $1.14. Local 4G LTE and 5G data on top carrier networks in East Asia. Works on all eSIM compatible phones.

Start your East Asia trip connected from the moment you land. HelloRoam prepaid e-sim card activates via QR code in under 2 minutes on any eSIM compatible phone. Plans start from $1.14, well below Verizon TravelPass ($10/day), T-Mobile international add-ons, and AT&T International Day Pass. Skip the airport SIM shop and skip the carrier contract. HelloRoam connects to the strongest local 4G LTE or 5G network automatically, whether you're in a city or a rural area. One account covers 185+ countries through 203+ carrier networks.

HelloRoam: the best eSIM for East Asia. Plans from $1.14, set up before your flight, no store visit, no SIM swap. Keep your number active on dual SIM. Works on any e-sim compatible iPhone or Android.

Unlimited Data

5GChina Unicom

Choose number of eSIMs

1 eSIM

How long will you be away?

Choose durationHow many days?

7 Days

How long will you be away?

1 day
2 days
3 days
4 days
5 days-8%
6 days
7 days
8 days
9 days
10 days-11%
11 days
12 days
13 days
14 days
15 days
16 days
17 days
18 days
19 days
20 days-15%
21 days
22 days
23 days
24 days
25 days
26 days
27 days
28 days
29 days
30 days-18%

1 day
2 days
3 days
4 days
5 days-8%
6 days
7 days
8 days
9 days
10 days-11%
11 days
12 days
13 days
14 days
15 days
16 days
17 days
18 days
19 days
20 days-15%
21 days
22 days
23 days
24 days
25 days
26 days
27 days
28 days
29 days
30 days-18%

Save 8%

7 Days

Save 8%

eSIMs/Travelers

Up to 5G support

5GChina Unicom

Choose number of eSIMs

1 eSIM

Choose number of eSIMsHow many travellers

1 eSIM

TotalFrom $4.14USD

Activate instantly

Install your eSIM before or during your trip. Your plan starts when your device connects to a local network at your destination, and auto-activates after 120 days. User guide

Apple App Store

Rated 5/5

Secure payment guaranteed

eSIM - 1

$0.00

eSIM - 1

$0.00

An eSIM for East Asia from HelloRoam starts at $1.14 per day across 203+ carrier networks in 185+ countries. Activate via QR code in under two minutes on any eSIM compatible phone. Keep your AT&T, T-Mobile, or Verizon number active.

203+ networks
5G and 4G LTE
under 2 minutes activation

UpdatedApril 2026

How to use HelloRoam

How to Set Up an eSIM in East Asia

Follow these steps to set up your eSIM card on iPhone or Android. Works for any eSIM for international travel, no replacement sim, no store visit.

Set up an eSIM on your iPhone with the HelloRoam app

iPhone settings screen showing cellular options

10GB

Most travelers choose 🔥

Starting from

Choose your plan & checkout online

Select a data plan for your destination and complete checkout.

Scan the QR code

Scan the QR code to install your eSIM instantly.

Installing...

Activate in minutes: ready on arrival

Your eSIM installs instantly and activates when you land.

Manage it all from our mobile app

Track usage, top up data, and manage all your eSIMs in one place.

10GB

Most travelers choose 🔥

Starting from

Choose your plan & checkout online

Select a data plan for your destination and complete checkout.

Scan the QR code

Scan the QR code to install your eSIM instantly.

Installing...

Activate in minutes: ready on arrival

Your eSIM installs instantly and activates when you land.

Manage it all from our mobile app

Track usage, top up data, and manage all your eSIMs in one place.

10GB

Most travelers choose 🔥

Starting from

Choose your plan & checkout online

Select a data plan for your destination and complete checkout.

Scan the QR code

Scan the QR code to install your eSIM instantly.

Installing...

Activate in minutes: ready on arrival

Your eSIM installs instantly and activates when you land.

Manage it all from our mobile app

Track usage, top up data, and manage all your eSIMs in one place.

10GB

Most travelers choose 🔥

Starting from

Choose your plan & checkout online

Select a data plan for your destination and complete checkout.

Scan the QR code

Scan the QR code to install your eSIM instantly.

Installing...

Activate in minutes: ready on arrival

Your eSIM installs instantly and activates when you land.

Manage it all from our mobile app

Track usage, top up data, and manage all your eSIMs in one place.

Trip changed? Don't worry, we've got you!

Plans can change anytime, and that's okay. With HelloRoam, you can easily request a refund for your eSIM within 180 days of purchase.

Learn more about our refund policy

East Asia eSIM vs AT&T, T-Mobile, and Verizon Roaming

When comparing eSIM vs a travel SIM card for East Asia, HelloRoam wins on price. It beats Verizon TravelPass ($10/day), T-Mobile international add-ons, and AT&T International Day Pass fees. Skip the airport SIM shop and get a better international data plan from $1.14 with a 180-day refund guarantee.

Feature		Local provider	Limited data eSIM
180-day refund policy
24/7 live chat support
$0 activation fees
99.8% uptime guarantee
No data overage charges
Instant QR code delivery
Premium East Asia carrier networks

Why Travelers Choose HelloRoam e-sim for East Asia

24/7 live chat support

Need help at 2 AM in Tokyo or midnight in Paris? HelloRoam support is available 24/7. Message us and a real person responds in under 5 minutes. No bots, no wait queue.

Activate your e-sim in under 2 minutes

Buy your plan, scan the QR code, and you're connected the moment you land. No store visit, no SIM swap, no paperwork. Works on any eSIM compatible phone in under 2 minutes.

Keep your AT&T, T-Mobile, or Verizon number

Keep your AT&T, T-Mobile, or Verizon number active for calls and texts. HelloRoam runs as a second eSIM line on any dual SIM compatible phone, so you never miss a call from home.

203+ local carrier networks

HelloRoam eSIMs connect to 203+ carrier networks across 185+ countries. Your phone switches to the strongest available 4G LTE or 5G signal automatically.

Data alerts before you run out

HelloRoam alerts you at 80% data usage so you never hit a surprise cap mid-trip. Top up instantly from the app without reinstalling your eSIM or visiting a store.

Local 4G LTE and 5G speeds

Your East Asia e-sim card connects to trusted local 4G LTE and 5G networks. HelloRoam picks the strongest available signal for navigation, streaming, and video calls.

Regional and global eSIM plans

Heading to multiple countries? HelloRoam regional eSIM plans cover Europe, Asia, the Americas, and 185+ destinations in one purchase. Tourist eSIM or long-stay: choose fixed data or unlimited data plans. One account, no SIM swaps.

Free hotspot and data sharing

Share your East Asia eSIM data with a laptop or tablet using your phone's built-in hotspot. No extra fees, no setup required. Works on all eSIM compatible phones.

24/7 live chat support

Need help at 2 AM in Tokyo or midnight in Paris? HelloRoam support is available 24/7. Message us and a real person responds in under 5 minutes. No bots, no wait queue.

Activate your e-sim in under 2 minutes

Buy your plan, scan the QR code, and you're connected the moment you land. No store visit, no SIM swap, no paperwork. Works on any eSIM compatible phone in under 2 minutes.

Keep your AT&T, T-Mobile, or Verizon number

Keep your AT&T, T-Mobile, or Verizon number active for calls and texts. HelloRoam runs as a second eSIM line on any dual SIM compatible phone, so you never miss a call from home.

203+ local carrier networks

HelloRoam eSIMs connect to 203+ carrier networks across 185+ countries. Your phone switches to the strongest available 4G LTE or 5G signal automatically.

Data alerts before you run out

HelloRoam alerts you at 80% data usage so you never hit a surprise cap mid-trip. Top up instantly from the app without reinstalling your eSIM or visiting a store.

Local 4G LTE and 5G speeds

Your East Asia e-sim card connects to trusted local 4G LTE and 5G networks. HelloRoam picks the strongest available signal for navigation, streaming, and video calls.

Regional and global eSIM plans

Free hotspot and data sharing

Share your East Asia eSIM data with a laptop or tablet using your phone's built-in hotspot. No extra fees, no setup required. Works on all eSIM compatible phones.

What Is an e SIM? How eSIM Works in East Asia

An eSIM card is a digital SIM built directly into your phone. There is no plastic 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. It works as a prepaid data plan for East Asia travel with no airport SIM shop, no replacement SIM card, and no carrier contract. Follow the step-by-step setup guide to get connected before your flight. guide

Unlimited Data

Up to 5G support

Data sharing

Learn more about eSIM

15.56 GB

Out of 30 GB left

10GB

East Asia Cross-Border Connectivity Guide

East Asia hosts three of the world's top five fastest mobile networks. Japan, South Korea, and Taiwan consistently rank at the top of global mobile network benchmarks. A HelloRoam East Asia regional eSIM connects you to these premium networks for the popular Tokyo-Seoul-Taipei travel circuit.

Japan has near-universal network coverage including on the Shinkansen bullet train network, subway systems in Tokyo, Osaka, Kyoto, and Sapporo, and even in rural mountain areas. local partner networks operate 5G in all major cities. Japan's indoor coverage is exceptional, including in shopping malls, department stores, and underground arcades.

South Korea has one of the world's highest 5G penetration rates. local partner networks operate dense 5G networks in Seoul, Busan, Incheon, and across the country. Coverage on the Seoul Metro is excellent throughout all lines. Jeju Island and coastal areas have strong 4G. Even remote mountain areas in Gangwon Province have reasonable coverage along main roads.

local partner networks. Taipei's MRT system has full underground coverage. The east coast (Taroko Gorge, Hualien), Sun Moon Lake, and Kenting are all well-served. Mountain roads through the Central Mountain Range can have brief gaps.

Hong Kong has some of the world's densest mobile coverage. All MTR lines, major buildings, and outdoor areas have excellent 4G and 5G. PCCW, local partner networks, and CSL operate competitive networks across this compact territory.

Mongolia covers a vast country with coverage primarily in Ulaanbaatar and along main highways. The steppe and Gobi Desert grasslands away from settlements have no mobile coverage. Adventure travelers to the Gobi Desert and remote steppe areas should plan entirely for offline operation.

Japan, South Korea, and Taiwan rank among the world's top five fastest mobile networks
Excellent subway and underground transit coverage in Tokyo, Seoul, and Taipei
Japan's Shinkansen has in-train 4G and 5G coverage throughout
Hong Kong has near-total coverage across the entire city
Mongolia outside Ulaanbaatar has very limited coverage
China mainland requires a separate plan due to network restrictions

SourcesOokla Global Speedtest Index 2025; GSMA 2026; local partner networks Coverage Data 2025

eSIM Travel Tips for East Asia

Japan's Shinkansen Has In-Train Coverage
Japan's Shinkansen bullet train network has 4G and 5G coverage throughout most routes including tunnels on the Tokaido, Sanyo, and Tohoku lines. You can stream, navigate, and message throughout train journeys from Tokyo to Osaka, Kyoto, Hiroshima, and Sapporo. Brief gaps may occur in the longest tunnel sections.
South Korea's Korea Rail Serves Well Too
KTX high-speed rail in South Korea has good 4G coverage along routes from Seoul to Busan, Gyeongju, and Gangneung (for ski resorts). The Seoul Metro (subway) has coverage throughout all underground sections, unlike many other countries' subway systems. Download your Seoul neighborhood maps even though coverage is reliable, as offline maps are faster.
Taipei's Night Markets Have Heavy Network Demand
Taipei's famous night markets (Shilin, Raohe, Ningxia) draw massive crowds in the evenings, which can slow 4G speeds due to network congestion. Download any content you need for the evening before heading into the market. Navigation apps still work but may load slowly during peak hours.
Hong Kong's MTR Has Perfect Underground Coverage
Hong Kong's MTR subway system has full 4G and 5G coverage on all lines including deep underground sections. local partner networks have installed repeaters throughout the system. You can navigate, message, and stream throughout any MTR journey on your HelloRoam eSIM.
Mongolia Requires Full Offline Preparation
Outside Ulaanbaatar and provincial capitals, Mongolia has no mobile coverage across the vast steppe, Gobi Desert, and mountain wilderness areas. For any steppe tour, ger camp stay, or Gobi Desert expedition, download all maps, guides, and emergency contacts before leaving Ulaanbaatar. GPS hardware in your phone works without data but only shows your location on downloaded maps.
Check if China Is on Your Plan
Mainland China has separate and restricted network access due to the Great Firewall. Most East Asia regional plans do not include China or have very limited access. Hong Kong is separate from mainland China and is covered normally. Macau may also be covered separately. If your trip includes mainland China, verify coverage or plan for a separate option.
Emergency Numbers in East Asia
East Asia emergency numbers: Japan uses 110 for police and 119 for fire and ambulance. South Korea uses 119 for fire and medical and 112 for police. Taiwan uses 110 for police and 119 for fire and ambulance. Hong Kong uses 999 for all emergencies. Mongolia uses 102 for police and 103 for ambulance. Save the correct numbers for each country.

Get your eSIM

Network Coverage Across East Asia

East Asia's mobile networks are consistently among the world's top performers in speed, coverage, and innovation.

Japan's local partner networks leads in coverage breadth. Docomo's network reaches remote mountain villages, small rural towns, and most offshore islands. local partner networks and au (local partner networks) compete in urban markets with strong 5G. Japan has exceptionally deep indoor coverage, including in multi-level underground shopping complexes and subway stations.

South Korea pioneered 4G LTE deployment and has the world's highest 5G penetration rates. local partner networks (Korea Telecom), and LG U+ all operate nationwide 5G. Average 5G download speeds in Seoul consistently rank among the world's fastest. Even relatively rural areas in Jeolla and Gangwon provinces have strong 4G.

Taiwan's local partner networks (CHT) local partner networks lead in national coverage. Taipei's dense urban network competes with Tokyo and Seoul for speed. The east coast scenic rail line through Taroko Gorge has good coverage. The Central Cross-Island Highway through mountain passes has some brief gaps.

Hong Kong's three operators (PCCW, local partner networks, CSL) serve one of the world's densest urban environments. Coverage in high-rise residential buildings, the harbour waterfront, and the airport all meet premium standards.

Mongolia presents the stark opposite: Mobicom and Unitel cover Ulaanbaatar and provincial towns well, but Mongolia is one of the least densely populated countries on earth. The steppe infrastructure simply cannot reach the vast majority of the country's geographic area.

5G and 4G LTE
5G and 4G LTE coverage
N
NTT Docomo (Japan)
S
SK Telecom (South Korea)

Regional eSIM vs Country-by-Country Plans

For the Tokyo-Seoul-Taipei circuit, a regional eSIM eliminates the need for three separate purchases and SIM swaps in three of the world's most expensive cities.

Recommended

Typical cost

—

Details

One plan for Japan, South Korea, Taiwan, Hong Kong, and Macau. Buy once before departure. No hunting for SIMs in Tokyo's crowded arrival halls. Consistent pricing for your entire East Asia circuit.

Individual country SIMs

Typical cost

—

Details

Japan's convenience store and airport SIMs are well-organized but require in-country purchase. South Korea requires passport for SIM registration. Buying and managing three separate SIMs for a multi-country trip is cumbersome.

Home carrier international billing

Typical cost

—

Details

US carriers charge $1.14 per day for Japan and South Korea. A 14-day Tokyo-Seoul-Taipei trip costs significant data fees at full daily rates. Most plans throttle speeds after a small cap.

Prices approximate as of April 2026. Actual savings vary.

Best Times for East Asian Travel Data

Japan's peak travel seasons are cherry blossom (late March to early April) and autumn foliage (mid-October to November). Tokyo, Kyoto, and Osaka networks see heavy demand in popular viewpoint areas during these brief seasons. Download Kyoto's temple routes offline before peak blossom weekends.

South Korea's Jeju Island and Seoul see peak domestic travel during Chuseok (Lunar New Year equivalent) and summer holidays. Network congestion at popular destinations like Bukchon Hanok Village and Myeongdong can slow speeds.

Taiwan's travel is year-round with peak domestic travel during Lunar New Year (late January to February). Taipei's night market district and Sun Moon Lake have their busiest days during national holidays.

Check Device Compatibility Data Usage Calculator

What Our Customers Say Join thousands of happy travelers

Apple App Store

Rated 5/5

4.8Rating

"Used HelloRoam on my trip to Tokyo. Had data the moment I landed at Narita. Way better than the AT&T international plan I was paying for."

Sarah M.

4.8Rating

"Saved a fortune vs Verizon TravelPass in Europe. Connected in Paris, Rome, and Barcelona without a single roaming charge."

James K.

"Set up my eSIM at LAX before boarding. By the time I landed in London, I had 5G data ready. No SIM swap needed."

4.8Rating

"HelloRoam covered 5 countries on my Southeast Asia trip. Cheaper than one day of T-Mobile international roaming."

David L.

4.8Rating

"The QR code setup took 2 minutes. Used it for work calls and navigation in Mexico City. Crystal clear connection."

Maria C.

4.8Rating

"180-day refund policy sold me. Ended up using every megabyte in Thailand. Will buy again for my next trip."

Michael T.

4.8Rating

"Used HelloRoam on my trip to Tokyo. Had data the moment I landed at Narita. Way better than the AT&T international plan I was paying for."

Sarah M.

"Set up my eSIM at LAX before boarding. By the time I landed in London, I had 5G data ready. No SIM swap needed."

4.8Rating

"HelloRoam covered 5 countries on my Southeast Asia trip. Cheaper than one day of T-Mobile international roaming."

David L.

4.8Rating

"The QR code setup took 2 minutes. Used it for work calls and navigation in Mexico City. Crystal clear connection."

Maria C.

4.8Rating

"180-day refund policy sold me. Ended up using every megabyte in Thailand. Will buy again for my next trip."

Michael T.

Prices verified: April 21, 2026

East Asia eSIM Questions Answered

HelloRoam is the top-rated e SIM for Americans flying to East Asia. It connects to 203+ carrier networks across 185+ countries, with plans from $1.14 in USD. You activate via QR code in under 2 minutes before leaving JFK, LAX, or any US airport. Your AT&T, T-Mobile, or Verizon number stays active through dual SIM while HelloRoam handles data abroad. You get local 4G LTE and 5G speeds, a 180-day refund guarantee, and 24/7 live chat support.

A East Asia eSIM card from HelloRoam costs from $1.14 in USD. Fixed data plans range from 1GB to 20GB. Unlimited daily plans start at $20 for longer stays. Compare that to AT&T International Day Pass at $12/day, Verizon TravelPass at $10/day, or T-Mobile Go5G Plus add-ons. All HelloRoam e-sim plans include local 4G LTE and 5G access with no overage charges, no carrier contract, and no daily fees.

HelloRoam eSIM in East Asia connects to local 4G LTE and 5G carrier networks, the same towers locals use. Your phone picks the strongest signal the moment you land at the airport. Coverage spans major cities, highways, and most rural areas. HelloRoam partners with 203+ carrier networks globally, so you get speeds similar to what you're used to on T-Mobile, AT&T, or Verizon at home.

Buy your East Asia e SIM before you leave home in three steps. First, pick your plan at helloroam.com and check out in USD. Second, scan the QR code from your email in Settings under Add eSIM or Add Cellular Plan. Third, your eSIM installs in under 2 minutes. Set it up the night before your flight from LAX, JFK, SFO, or any US airport and land connected.

iPhone XS and all newer models work with HelloRoam e-sim in East Asia. iPhone 14 and later sold in the US ship eSIM-only with no physical SIM tray. iPhone 15 and iPhone 16 support dual eSIM, so your AT&T or Verizon line stays active for calls while HelloRoam handles travel data. Go to Settings, tap Cellular, then Add eSIM, and scan the QR code from your email.

A East Asia eSIM from HelloRoam starts from $1.14 per day, paid once in USD. AT&T International Day Pass charges $12 per day. Verizon TravelPass costs $10 per day. T-Mobile Go5G Plus includes some free data but throttles speeds after 5GB. HelloRoam connects to local networks in East Asia at local data prices, not the retail roaming rates US carriers charge.

Activate your East Asia eSIM at home before heading to the airport. Open Settings on your iPhone or Android, tap Add eSIM, and scan the QR code from your HelloRoam email. The process takes under 2 minutes. Your e SIM connects to a local network the moment your plane lands. No hunting for a SIM kiosk at JFK, LAX, or SFO. No SIM card swap needed.

HelloRoam offers a 180-day refund window on all eSIM plans, processed back to your original USD payment method. If your trip changes and you have not installed or activated your e-sim, you get a full refund. If you used some data, HelloRoam refunds the unused portion. Contact support with your order ID within 180 days. Refunds process in 5 to 14 business days to your US bank or card. HelloRoam's 180-day window is longer than Airalo and most competitors.

HelloRoam eSIM works on any carrier-unlocked phone, including phones originally on T-Mobile or Verizon. If your phone is paid off and unlocked, scan the QR code in Settings to add HelloRoam as a second line. Your T-Mobile or Verizon number stays active for calls and texts while HelloRoam handles data in East Asia. Phones still on a carrier payment plan may require unlocking first. Complies with US CCPA data privacy rules. Does not sell personal data.

HelloRoam eSIM for business travel and leisure to East Asia connects to 203+ carrier networks across 185+ countries, starting from $1.14, with a 180-day refund guarantee. Whether you need an eSIM for business travel or a vacation, it works on any unlocked eSIM compatible iPhone, Samsung, or Android phone. You get local 4G LTE and 5G speeds, 24/7 live chat support, and instant QR code delivery. No store visit and no contract required.

HelloRoam eSIM plans start from $1.14 per day across 185+ countries with no carrier contract. Compared to Verizon TravelPass at $10/day and T-Mobile international add-ons, HelloRoam gives you the same local data speeds at a fraction of the price. No store visit, no paperwork, and no locked contracts. Your eSIM arrives by QR code and activates in under two minutes.

HelloRoam is a global eSIM platform that partners with local carriers in 185+ countries, including East Asia. Instead of charging retail roaming rates, HelloRoam connects your phone to a local partner network so you pay local data prices. You get the same speeds as a local prepaid sim card without the premium fees charged by T-Mobile or Verizon for international plans. Buy a plan, scan a QR code, and connect on arrival. Plans cover the EU, Europe, and 185+ destinations worldwide. HelloRoam is an eSIM platform, not an MVNO. It partners directly with local carrier networks in East Asia to deliver data at local speeds.