Japan + South Korea + Taiwan eSIMs.

Compare one eSIM for Japan, South Korea and Taiwan with separate plans. Adjust each stop to match your trip.

Your trip

18days total

Example trip · One phone

Japan8 days
South Korea5 days
Taiwan5 days

Your usage

Everyday use

Maps, social browsing and music

Estimated need: 14.04 GB · 20% buffer included

Your plan

Fewest eSIMs · Lowest price

20 GB

$23.75

1 eSIM

JapanSouth KoreaTaiwan
20 GBValid for 30 days

Plan details

The fewest eSIMs, then the fewest switches, then the lowest price in our catalog for this trip.

Asia

Data-only eSIM

20 GB30 days

Network partnersView 14 destinations

BangladeshBanglalink (4G), Grameenphone (4G), Robi (4G)
CambodiaCellcard (4G), Metfone (4G)
Hong Kongcsl (5G), SmarTone (5G)
IndiaAirTel (5G)
IndonesiaIndosat (5G), Telkomsel (5G), XL (4G)
JapanKDDI/au (5G), SoftBank (5G)
LaosLao Telecom (5G)
Macao SAR ChinaCTM (5G)
MalaysiaCelcomDigi (5G), Maxis (5G)
PhilippinesGlobe (5G), SMART (5G)
South KoreaLG Uplus (5G), SKTelecom (5G)
TaiwanChunghwa (5G), Taiwan Mobile (5G)
ThailandAIS (5G), DTAC (5G), TrueMove H (5G)
VietnamMobiFone (5G), Viettel Mobile (5G), Vinaphone (5G)

Data routing: Singapore
Activation: First connection in a covered destination
Plan duration: 30 days from activation
Activate within: 180 days of purchase
Hotspot: Supported
Network speed: Up to 5G on selected networks
Calls & texts: No calls or SMS allowance

Coverage14 destinations

USD · One-time paymentPricing details

Mobile data only. Each eSIM has its own data allowance.

Catalog checked 20 Oct 2026, 09:35 UTC. Prices and terms are checked again before adding to cart.

One eSIM or separate plans?

One eSIM

Keep one data line across all three countries. Taiwan must be listed alongside Japan and South Korea; a plan that covers the first two does not automatically cover the third.

Separate eSIMs

Match each allowance to the length of that stay. The lowest-price setup may use two or three eSIMs; check their assigned stops and remember that separate balances are not pooled.

Using your phone in Japan, Korea and Taiwan

Rail journeys in Japan: Japan Travel by NAVITIME helps with train routing and rail-pass options for the first leg of your trip.
Directions in South Korea: Use NAVER Maps for navigation in English; k.ride is another useful app to set up if you plan to take taxis.
High-speed trains in Taiwan: Taiwan High Speed Rail’s T-EX app handles high-speed rail bookings and mobile tickets. Follow its ticket-collection instructions before boarding.

Prepare your apps for all three stops

Install and sign in before departure, while you can receive any verification texts. These eSIMs provide data, without a Japanese, Korean or Taiwanese phone number.

For Korean restaurant bookings, CATCHTABLE Global lets you sign up without a Korean number. Other apps and bookings can have different requirements, so check them before traveling.

Save each hotel’s address and your airport-to-hotel directions for offline access before every flight.

Before you go

What if I return to Japan before flying home?

Add Japan again as the final stop. The comparison checks data for both visits and validity through your time in Korea and Taiwan, including dated gaps between stays.

Can unused Korean data be used in Taiwan?

Only if it is on the same eSIM and that plan includes Taiwan. Data left on a Korea-only eSIM cannot be transferred to a separate Taiwan plan.

Can I share data with a laptop or another phone?

Open Change under Your usage and select sharing to require hotspot support. Sharing uses your eSIM’s data and only works while the devices stay nearby.

Will these eSIMs work on my phone?

Your phone must be carrier-unlocked and eSIM-compatible.

Check your phone

When should I install and activate these eSIMs?

Install with reliable internet before departure and keep each travel line off until its covered part of the trip begins. The live plans we list start validity on first connection in a covered destination. Check each selected plan’s activation deadline after purchase.

Installation and activation guide

Can I keep my usual number?

On a compatible dual-SIM phone, keep your home line for its number and use the travel eSIM for data. Disable home-line data roaming and automatic data switching. Calls and SMS, including verification texts, depend on your home carrier and may incur charges.

Keep your number abroad