Roamclarity

What breaks when you travel on a data-only eSIM — checked country by country.

Japan · New account creation

Can you use Uber in Japan with a foreign phone number?

Likely, if you can receive a text.

Uber verifies sign-up by text to any number and doesn’t appear to require a Japanese one, so keeping your home SIM on for the code should be enough. That rests on Uber’s global help material, not a Japan-specific page.

Where this comes from

Uber global help centre plus consistent secondary write-ups. No Japan-specific policy page found.

How sure we are

This rests on consistent reports from travellers and guides, not on anything the company has published.

Next check

By 6 Nov 2026. Apps change their sign-up rules without notice; if you see something different, tell us at [email protected].

How it compares with other transport options in Japan

AppData-only eSIM on its ownWith your home SIM onBasis
GO Works Works Company's own documentation
Uber (rides) Doesn’t work (reported) Works (reported) Reported, not confirmed
Suica / PASMO (physical card) Works Works Company's own documentation
Welcome Suica Mobile Works Works Company's own documentation

ROAMCLARITY / FIELDNOTES

Take your fieldnotes with you.

Create a key-based account to save this Japan plan across devices. No email or phone number required.

Sign in with account key

Privacy & account information

Device saves stay in this browser. Account saves store selected activities and the home-SIM setting in our Cloudflare database until you delete the account. Sessions expire after seven days. Your random account key is stored only as a hash on the server; keep your copy safe. We do not collect an email, name or phone number. Optional analytics store daily event totals by channel and language, without linking them to an account. Short-lived network digests are used for abuse control and are used in ten-minute windows, with expired records cleaned up on subsequent limited requests. Cloudflare may process request metadata to operate and secure the service. Contact [email protected] for questions. This service provides preparation guidance, not a guarantee that an app will accept you. Calculator amounts and inputs are processed in the browser and are not included in optional event counts.

Your choices, clearly explained.

Device saves stay in this browser. Account saves store selected activities and the home-SIM setting in our Cloudflare database until you delete the account. Sessions expire after seven days. Your random account key is stored only as a hash on the server; keep your copy safe. We do not collect an email, name or phone number. Optional analytics store daily event totals by channel and language, without linking them to an account. Short-lived network digests are used for abuse control and are used in ten-minute windows, with expired records cleaned up on subsequent limited requests. Cloudflare may process request metadata to operate and secure the service. Contact [email protected] for questions. This service provides preparation guidance, not a guarantee that an app will accept you. Calculator amounts and inputs are processed in the browser and are not included in optional event counts.