Destinations · Updated 2026-10-02
Best eSIM for Japan: what travellers need to know
For Japan, choose a data eSIM on a major network such as Docomo, SoftBank or KDDI. 10 GB covers most one-week trips; choose 20 GB or unlimited for two weeks with heavy maps and translation use. An eSIM is lighter and cheaper than renting pocket Wi-Fi.
Key facts
- Near-total 4G coverage, including Shinkansen routes
- Free public Wi-Fi often needs registration
- Data-only — no Japanese phone number
- Install at home and switch on when you land
eSIM vs pocket Wi-Fi
- No device to collect, charge or return
- Works for each traveller separately
- Usually cheaper for solo travellers and couples
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