Connect Instantly Across Asia & The World

Trusted by travelers for reliable eSIM plans in South Korea, Japan, China & beyond.

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"Saved me in Tokyo when my carrier didn't work!"

- Maria T.

"Best eSIM for Korea, hands down!"

- James L.

"Customer service responded in minutes!"

- Aisha K.

"Connected instantly in Shanghai!"

- David W.

"Perfect for my Asia business trip!"

- Sarah M.

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Active Users Today
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Orders Completed
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Countries Covered
99.7%
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Premium Asia eSIM Data Plans

Your #1 Destination for Asia Travel Connectivity - Instant eSIM Data Plans for Japan, Korea, China and Beyond

South Korea eSIM Data Plans

South Korea eSIM

Ultra-fast 5G connectivity through SK Telecom
Japan eSIM Data Plans

Japan eSIM

Nationwide 4G/5G coverage through NTT Docomo
China eSIM Data Plans

China eSIM

Reliable high-speed connection through China Mobile
Asia

Asia

Multi-country coverage across Asia

Most Popular eSIM Plans

Select your perfect data plan for seamless connectivity

BEST SELLER

Korea Max

20 GB • 30 Days

★★★★★ 4.9 (350+ sold)
$29.99 $24.99
SAVE 17%
  • Unlimited Social Media
  • Hotspot Capability
  • 5G/LTE Through SKT Priority
Buy Now
POPULAR

Japan Max

20 GB • 30 Days

★★★★★ 4.9 (280+ sold)
$32.99 $27.99
SAVE 15%
  • Video Streaming Optimized
  • 5G Network Access
  • Unlimited App Messaging
Buy Now
BEST SELLER

China Max

20 GB • 30 Days

★★★★★ 4.9 (290+ sold)
$29.99 $24.99
SAVE 17%
  • Nationwide Rural Coverage
  • High-Speed Data Priority
  • Non-Hong Kong IP
Buy Now
BEST VALUE

Asia 20

20 GB • 30 Days

★★★★★ 4.9 (320+ sold)
$94.99 $79.99
SAVE 16%
  • All Asian Countries
  • Unlimited Social Apps
  • Priority 5G Access
Buy Now

How It Works

Get connected in just a few simple steps

1

Choose Your Plan

Browse our selection of eSIM plans for Asia and select the one that best fits your travel needs and data requirements.

2

Complete Payment

Securely pay via PayPal, credit card, or other supported payment methods. Your transaction is protected with industry-standard encryption.

3

Instant Activation

Receive your eSIM QR code via email instantly. Scan the code with your phone, follow the simple setup instructions, and you're ready to connect.

eSIM Activation Process
Activate your eSIM in minutes, no physical SIM card needed

Real Human Connections That Make All The Difference

In a world of automated responses, we choose to be different - real people helping real travelers with genuine care and expertise

24/7 Human Support

Day or night, rain or shine, our dedicated team is always here for you - real people who genuinely care about making your travels seamless.

Personalized Recommendations

We'll suggest the perfect plan based on your itinerary and usage needs.

Real Human Connections

We believe technology should bring people together, not replace them. That's why every interaction with K-SIM is handled by our passionate team - real people who genuinely care about making your travels seamless.

"I was in tears at the airport when my eSIM wouldn't activate. The K-SIM team didn't just fix my connection - they calmed me down, stayed with me until everything worked perfectly, and even followed up to make sure I was okay. That's service you can't automate!"
Sarah J.
Sarah J. Travel Blogger | 37 Countries Visited
Experience The Human Difference

Recommended Apps to Download Before You Travel

South Korea (SK)

  • Papago – Korean translator (by Naver)
  • Gmarket Global – Shopping with English
  • K Ride – Ride-hailing for foreigners
  • Naver Maps – Transit routes in English
  • T-Money Pay – Subway/bus payments
  • Shuttle Delivery – Food delivery in English

Japan (JP)

  • Google Translate – Live sign translation
  • Navitime – Transit planning in English
  • JapanTaxi (MOV) – English taxi booking
  • Suica App – Digital train card (iOS)
  • Klook – Tours & travel bookings
  • LINE – Popular messaging app

China (CN)

  • WeChat – Chat & payments in one
  • Didi – Uber alternative with English
  • Pleco – Chinese dictionary with OCR
  • Baidu Maps – Precise local directions
  • Alipay – Pay anywhere with foreign card
  • LetsVPN – Use global apps safely

Important Plan Information

Data-Only Plans for Korea, Japan & China

Data Allowance

Plans range from 1GB to unlimited data, with speeds up to 300Mbps

Validity Period

Options from 1 day to 30 days, with auto-renewal available

Network Coverage

Partner networks in each country with 99% population coverage

  • All plans for Korea, Japan and China are data-only (no voice/SMS)
  • South Korea, Japan, and China have strict government regulations for voice/SMS plans

Getting a Voice/SMS Plan in South Korea, Japan, & China

  • Prepaid plans require passport verification at a physical location
  • China does not offer eSIM plans inside China
  • Chinese domestic phone's do not have eSIM Compatibility.
  • The process is lengthy and can take several hours
  • Korean policy mandates SIM deactivation when leaving the country
  • Reactivating after returning can take hours even with WiFi

For best experience in Korea, we recommend using data-only plans with messaging apps

Why Choose K-SIM?

Experience seamless connectivity with our innovative eSIM technology

Instant Activation

Get connected immediately after purchase with no waiting time

Wide Coverage

Access reliable networks across multiple countries in Asia

No Physical SIM

Eliminate the hassle of swapping SIM cards when traveling

K-SIM Customer Support

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