Japan
eSIM
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No roaming charges
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Keep your WhatsApp number
Fixed data plans
Choose the right data amount for your trip
Data, calls & texts
Plans that include mobile data, calls and SMS
Unlimited data
Best for heavy usage, streaming and hotspot
More plans
Explore more plans with different coverage and data options.
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Everything you need for stress-free travel
Stay connected across Japan
Coverage is strong across Tokyo, Kyoto and Osaka and holds up on the Shinkansen, connecting through a major Japanese network. Remote hiking trails and the higher slopes around Mount Fuji can still have gaps, so keep offline maps for the mountains.
Need help? We're here
Questions before or during your trip? Our UK-based team prides itself on fast, friendly support whenever you need us.
Need your eSIM urgently?
Order in seconds and receive your eSIM almost instantly by email, ready to install before you even leave for the airport.
Travel with confidence
Every eSIM includes instant activation, transparent pricing and our 30-day unused refund for complete peace of mind.
Running low on data?
Top up in seconds without replacing your eSIM, so you can carry on using maps, WhatsApp and everything else.
The questions everyone asks us
Using an eSIM in Japan
Japan has some of the most reliable mobile coverage anywhere, and a travel eSIM is the simplest way to use it. Install it before you fly and you are connected the moment you land at Narita, Haneda or Kansai, with no pocket wifi device to collect or post back.
Data-only, so keep your home number
A travel eSIM in Japan gives you mobile data rather than a Japanese phone number. Your usual number stays on your home SIM for calls and texts, and apps like WhatsApp and LINE run over the data. That suits almost every visitor, because maps, translation and messaging are what you actually reach for day to day.
Coverage on the move
Coverage is strong across Tokyo, Kyoto and Osaka and holds up on the Shinkansen, dropping only briefly in the longer tunnels. It reaches most rural and mountain areas too, though remote hiking trails and the higher slopes around Mount Fuji can still have gaps, so download offline maps for the trails.
How much data
For a typical two-week Japan trip using maps, translation, messaging and normal photo sharing, around 10–20GB is a sensible starting range. Frequent streaming or hotspot use can make 20GB or an unlimited plan a better fit, while a short city break may only need 3–5GB.
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.
