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eSIM for China mainland, Japan & South Korea

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Install your eSIM before or during your trip to China mainland, Japan & South Korea. Your data plan will activate automatically once you arrive and enable the eSIM on your device.

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No hidden fees

Mobile network coverage in China mainland, Japan & South Korea

This combined China, Japan and South Korea eSIM connects to local partner networks across all three Northeast Asia destinations. In mainland China, China Mobile provides 4G and 5G coverage across Beijing, Shanghai, Guangzhou and the high-speed rail corridors. In Japan, NTT docomo, KDDI/au, SoftBank and Rakuten Mobile serve Tokyo, Osaka and Kyoto. In South Korea, SK Telecom and LG U+ deliver 5G across Seoul and Busan. Service can weaken in remote mountains, alpine trails and along certain rural stretches in any of the three countries.

  • China Mobile
  • NTT docomo
  • KDDI/au
  • SoftBank
  • Rakuten Mobile
  • SK Telecom
  • LG U+
  • China Unicom

5 plans are available for China mainland, Japan & South Korea, from $4.99 up to $44.99. Every plan is data only, delivered by QR code, and starts counting when you connect on arrival.

China mainland, Japan & South Korea flag

Same plan, same coverage, wherever you go in China mainland, Japan & South Korea.

eSIM Prices for China mainland, Japan & South Korea: plans from $4.99 USD

TailSim, the best eSIM in China mainland, Japan & South Korea

Standard eSIM

daysPrice
7 days 1 GB$4.99 USD
15 days 3 GB$10.99 USD
30 days 5 GB$17.99 USD
30 days 10 GB$26.99 USD
30 days 20 GB$44.99 USD

TailSim vs. Other eSIM Providers in China mainland, Japan & South Korea

TailSim vs. Other eSIM Providers in China mainland, Japan & South Korea
TailSim logoAiralo logoHolafly logoSaily logo
Instant activation with QR code
Human support in your language
Price adjusted per destination
No mandatory app to buy and use
No roaming charges or surprises

Enjoy mobile data in China mainland, Japan & South Korea in 3 steps

  1. Customize your plan

    Pick the perfect data package for your trip to China mainland, Japan & South Korea based on how much you use your phone.

    Check compatibility
  2. Install your eSIM

    Get your eSIM by email and choose the installation method you prefer for China mainland, Japan & South Korea.

  3. Turn on your eSIM on arrival

    • Turn roaming on for the eSIM only
    • WhatsApp keeps your home number

eSIM vs SIM Card vs Roaming in China mainland, Japan & South Korea: Which is Best?

Provider
Pros
Cons
Price
TailSim eSIM in China mainland, Japan & South Korea
Immediate activation, no registration, works throughout the country
Requires eSIM-compatible device
From $4.99
Local SIM Card
Good speed, widely available
Queues, passport registration, process can be slow
$20-50
International Roaming
No setup required
Can be extremely expensive depending on carrier
$50-200+

eSIM Coverage in China mainland, Japan & South Korea Popular Destinations

Stay connected across China mainland, Japan & South Korea, including popular destinations such as Great Wall at Mutianyu, The Bund and Terracotta Army

eSIM Coverage in China mainland, Japan & South Korea Popular Destinations
Great Wall at Mutianyu
Beijing, China

A restored, less-crowded section of the Great Wall about 70 kilometers northeast of Beijing, accessible by tourist shuttle. The site includes a cable car and a toboggan slide for descent, with walking along restored watchtowers.

Forbidden City
Beijing, China

The imperial palace complex at the heart of Beijing, occupying the north side of Tiananmen Square. Visitors can walk through the main halls, side museums and the Imperial Garden, with audio guides available on mobile devices.

The Bund
Shanghai, China

The historic waterfront promenade along the western bank of the Huangpu River, lined with colonial-era buildings that face the modern Pudong skyline across the water. Walking the Bund pairs naturally with river cruises and Pudong observation decks.

Yu Garden
Shanghai, China

A classical Chinese garden in the old town of Shanghai, originally built in the 16th century and surrounded by a dense market area. The garden combines pavilions, rockeries and ponds, with the bazaar outside selling tea, dumplings and souvenirs.

Terracotta Army
Xi'an, China

The mausoleum complex of Emperor Qin Shi Huang, located outside Xi'an in Shaanxi province. The excavated pits contain thousands of life-size terracotta soldiers and horses, displayed in the original excavation halls.

Senso-ji
Tokyo, Japan

Tokyo's oldest Buddhist temple, located in Asakusa, with the bright Kaminarimon gate, the long Nakamise shopping street and the main hall dedicated to Kannon. The complex is reachable by subway and on foot, with surrounding traditional shops.

Fushimi Inari Shrine
Kyoto, Japan

A Shinto shrine complex on Mount Inari, famous for thousands of vermilion torii gates winding up the forested mountainside. Visitors walk through the lower gates freely; the upper trails require better shoes and can take several hours.

Dotonbori
Osaka, Japan

Osaka's neon-lit canal-side entertainment district, known for street food, large mechanical restaurant signs and the Glico running man. The Namba area combines shops, restaurants and riverboat piers in a dense, walkable grid.

Gyeongbokgung
Seoul, South Korea

The main royal palace of the Joseon dynasty, located in central Seoul at the foot of Bugaksan mountain. Visitors can watch the changing of the guard and explore restored throne halls, gates and the adjacent National Palace Museum.

Bukchon Hanok Village
Seoul, South Korea

A neighborhood of traditional Korean houses preserved between Gyeongbokgung and Changdeokgung palaces. The narrow lanes are inhabited, so visitors are asked to keep voices low and avoid entering private courtyards.

Gamcheon Culture Village
Busan, South Korea

A hillside neighborhood of stacked, brightly painted houses, narrow alleys and small art installations on the slopes above Busan. Walking maps help navigate the steep staircases between art pieces and cafes.

Why Travelers Prefer Our eSIM in China mainland, Japan & South Korea?

Advantages of our eSIM for China mainland, Japan & South Korea
  • ✦

    Instant activation for your trip

    Purchase your eSIM online before traveling to China mainland, Japan & South Korea, scan the QR code, and access mobile internet as soon as you arrive. No physical SIM card or local store required.

  • ✦

    Flexible prepaid and unlimited data plans

    Choose the best eSIM plan for your trip to China mainland, Japan & South Korea, whether you need unlimited data for remote work or a prepaid option for maps, messaging, and social media.

  • ✦

    Coverage across major destinations in China mainland, Japan & South Korea

    Enjoy reliable mobile internet in China, Japan, South Korea, airports, and popular tourist areas throughout China mainland, Japan & South Korea.

  • ✦

    Keep your current number while traveling

    Continue using your favorite apps, maps, messaging services, and online tools in China mainland, Japan & South Korea without swapping physical SIM cards. Enjoy a simple and convenient way to access mobile internet during your trip.

Traveler Experiences Using eSIM in China mainland, Japan & South Korea

Road Trip Through China mainland, Japan & South Korea

"Started with a week in Beijing and the Great Wall, then flew to Tokyo. Kept the same plan across the border with no reconfiguration. Maps and rail apps worked the entire trip. Signal dropped briefly on the rural Shinkansen stretch past Hiroshima, then recovered."

Business Trip to Shanghai

"Business trip to Shanghai and Tokyo with a few days off in Seoul. The plan worked across all three countries without reconfiguration. Hotspot stayed stable for short calls from the Bund waterfront, even during rush hour."

Digital Nomad in Seoul

"Digital nomad month rotating between Beijing, Tokyo and Seoul. Mobile data was reliable in all of them, even inside larger stations like Shinjuku and Seoul Station. Saved me buying three separate plans."

Backpacking Through China mainland, Japan & South Korea

"Dotonbori in Osaka on a backpacker budget, after a few days in Shanghai. The street food stands were busy but mobile data helped locate cheap ramen spots behind the main drag. Used the same plan in Busan afterwards without re-installing."

One-Week Trip to Kyoto

"Cultural week across Tokyo and Kyoto, used data for audio guide apps and museum tickets. Signal was reliable in both cities, even inside larger stations. Saved the hassle of swapping SIMs at the airport."

Family Vacation in Beijing

"Forbidden City with the family was a hit - the audio guides on the phone worked well and mobile data kept DiDi rides and food delivery running smoothly. Plan stayed active when we continued to Seoul afterwards."

First-Time Visitor in Busan

"First time in Busan, used mobile data for everything from subway directions to food delivery. Gamcheon Village was easy to navigate with maps. Same plan worked seamlessly when I extended the trip to Tokyo afterwards."

Honeymoon in Tokyo

"Honeymoon month across Shanghai, Tokyo and Seoul. The plan covered all three without buying anything extra, which let us focus on the trip rather than phone logistics. Signal was solid in all the cities and on the rail connections between them."

Traveler Experiences Using eSIM in China mainland, Japan & South Korea

Use your favorite apps in China mainland, Japan & South Korea without limits

Fast, stable connection for the apps you use most in China mainland, Japan & South Korea

  • WhatsApp

    Clear video calls in China mainland, Japan & South Korea without unexpected drops

  • Instagram

    Share stories and photos from China mainland, Japan & South Korea instantly

  • TikTok

    Enjoy creating video content from China mainland, Japan & South Korea and uploading it without waiting or buffering

  • Google Maps

    Navigate China mainland, Japan & South Korea with Google Maps without losing your way

How much data do you need in China mainland, Japan & South Korea?

Usage by activity
ActivityUsage
Google MapsLow
WhatsAppLow
InstagramMedium
YouTube / TikTokHigh
HotspotHigh
Traveler type
Traveler typeSuggested plan
Weekend trip3–5 GB
1 week traveler10–20 GB
Heavy travelerUnlimited

Tips to Stay Connected with eSIM in China mainland, Japan & South Korea

Install your China, Japan & South Korea eSIM before departure while connected to reliable WiFi, then activate the line after landing in Beijing, Tokyo or Seoul so setup does not interrupt your first travel day.

Download offline maps before hiking in the Japanese Alps, Yakushima, Seoraksan, Jirisan or the mountains of western Sichuan. Mobile coverage can disappear on remote trails.

For trips that cross from Japan to South Korea via Tokyo-Fukuoka-Busan, keep the travel eSIM selected for mobile data and verify that your physical SIM has data roaming disabled before boarding flights.

Save hotel addresses, booking confirmations and Alipay, Suica or T-money card pickup details on your phone before arrival. Mobile data is useful for travel apps, but offline copies help during airport transfers.

In China, mobile data supports translation apps, ride-hailing (DiDi) and restaurant search better than public WiFi, especially outside hotels. Keep key addresses written in Chinese for taxi drivers.

In Japan and South Korea, Naver Map and KakaoMap work with mobile data more reliably than Google Maps in some regions. Keep your account credentials accessible offline.

Check whether hotspot use is included before working from a laptop. Video meetings and cloud backups consume data quickly, particularly on fixed-data plans.

Weather and rail conditions can change quickly around Hokkaido, Jeju Island and the Korean mountain corridors. Use mobile data to check official alerts before traveling.

Frequently Asked Questions

01

What is the best eSIM for China, Japan and South Korea?

The best eSIM for China, Japan and South Korea is one that covers all three Northeast Asia destinations with a single plan, instant activation and no roaming fees. TailSim offers prepaid and unlimited options for multi-country travelers.

02

Do I need a separate eSIM for each country?

No. A combined China-Japan-South Korea eSIM keeps a single installation across all three borders, so you can travel between Beijing, Tokyo and Seoul without swapping SIMs or buying a second plan.

03

What do I need to use an eSIM in China, Japan or South Korea as a tourist?

You need an eSIM-compatible device and a data plan for China, Japan & South Korea. After installation, mobile data works in all three countries without changing physical SIM cards.

04

Can I use my physical SIM and the eSIM at the same time?

Yes. On dual SIM devices, use your physical SIM for calls and SMS and the eSIM for mobile data. Disable roaming on your physical SIM to avoid charges from your regular carrier.

05

Is eSIM better than pocket WiFi in Northeast Asia?

For many travelers, an eSIM is more convenient than renting pocket WiFi because there is no device to charge, carry or return. Coverage uses the same partner carriers as local SIM cards, and you keep your regular phone number available for calls.

06

Does eSIM work in rural China, Japan and South Korea?

Yes, but service is strongest in Beijing, Shanghai, Tokyo, Osaka, Kyoto, Seoul and Busan. Signal can weaken in alpine regions, mountain national parks, ferry routes to outer islands and rural highways, so download offline maps before remote trips.

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