East Asia - Japan, South Korea & China
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Everything you need for stress-free travel
Stay connected across East Asia - Japan, South Korea & China
Coverage is generally strong across the major cities of Japan and South Korea, their metros and high-speed trains, and the main Chinese cities, connecting through local networks. Japan and South Korea are open; whether Western apps work in mainland China depends on how the plan routes, so check the plan details.
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The questions everyone asks us
Using an eSIM in East Asia
An East Asia eSIM keeps you online across Japan, South Korea and China on a single plan, ideal for a multi-country trip through the region. Set it up before you go, because eSIM providers' own sites can be unreachable from inside mainland China, then switch it on when you arrive.
Excellent coverage, and a note on China
Coverage is generally strong across the major cities of Japan and South Korea, on their metros and high-speed trains, and across the main Chinese cities, so a trip taking in all three is easy on one plan. Japan and South Korea have an open internet, but mainland China filters it, so apps like Google and WhatsApp are blocked on a local Chinese connection. Whether they work in China depends on how the plan routes its data: some internationally routed travel eSIMs can provide access to services that are otherwise filtered on mainland connections, but this should not be assumed for every plan, so check the plan details.
How much data
A week or two of maps, translation and messaging across the three is often around 5-10GB for a week and 10-20GB for two, with more for heavier use. A data-only eSIM does not provide a phone number for receiving ordinary SMS on that eSIM, so keep access to a separate number if you need verification texts for services such as WeChat Pay or Alipay. These are starting points, and actual use varies.
Travel eSIM FAQs
Top-up availability depends on the plan. Some eSIMs can be topped up, including certain unlimited plans, while others may require a new plan once the current one ends or runs out. Check the individual plan details for your selected option.
Helpful eSIM guides
Useful advice for your destination and getting connected abroad.
