Roamclarity

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

Japan · Major food delivery platform

Can you use Demae‑can (出前館) without a Japanese phone number?

Not on a data-only eSIM.

Demae-can won’t register a number without a voice contract, so a data-only eSIM — which has no number at all — can’t get you in. Its help page doesn’t say whether a foreign number with voice calls is accepted, and we couldn’t confirm that either way.

What 出前館 (Demae-can) says

固定電話番号や音声契約のない携帯電話番号はご登録いただけません

In English: “Landline numbers and mobile numbers without a voice contract cannot be registered.”

How sure we are

We read this in the company’s own published material.

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 delivery options in Japan

AppData-only eSIM on its ownWith your home SIM onBasis
出前館 (Demae-can) Doesn’t work Not confirmed Company's own documentation
Uber Eats Japan Doesn’t work (reported) Works (reported) Reported, not confirmed

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.