Roamclarity

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

Japan · Large concert and event ticketing site

Can you buy tickets on Ticket Pia (チケットぴあ) with a foreign phone number?

Probably not.

Users consistently report that Ticket Pia verifies a Japanese mobile number (070, 080 or 090) at sign-up. We couldn’t find a Ticket Pia policy page stating this, so treat it as reported rather than confirmed.

Check everything you plan to do in Japan →

Where this comes from

Consistent reports from users on Japanese Q&A boards. No company policy page found stating the rule.

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].

Other apps in Japan

Won’t take a foreign number

Refuse lines without voice calls

Need a number that can receive a text

Work on a data-only eSIM on its own

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.