Maps, Suica and translation running before the Narita Express doors close. 5G in every major city and along the Shinkansen.
Data-only plan on KDDI and Softbank 5G/4G networks. Starts when you first connect in Japan.
Activate within 1 month of purchase
We recommend activating your eSIM no later than 1 month after you buy it. After that, it might not work.
Speeds depend on location and network load.
Your phone must support eSIM and be carrier-unlocked.
| Compare | eSIM | Pocket Wi-Fi | Roaming |
|---|---|---|---|
| Pick-up / return | None | Airport counter | None |
| Battery to carry | No | Yes | No |
| Keep your number | Yes | Yes | Yes |
Install your eSIM at home, then switch on the MobiSIM line when you land at Narita, Haneda or Kansai. You’ll have data before passport control for Google Maps, Jorudan or Navitime.
Coverage is dense across Tokyo, Osaka and Kyoto and along Shinkansen routes. In the Japanese Alps, Hokkaido parks and islands such as Yakushima, signal weakens outside towns — save offline maps first.
Your home SIM stays active for calls and SMS codes from your bank. WhatsApp and iMessage keep your usual number while MobiSIM handles data.
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