What breaks when you travel on a data-only eSIM — checked country by country.
Japan · Depends entirely on whether you already have an account
Probably, with an account you already have.
Travellers report that an Uber Eats account opened at home keeps working in Japan on data alone, because ordering and courier chat run inside the app. A new account is different: it still needs a text code at sign-up.
Multiple traveller write-ups agree. Not confirmed against an Uber Japan policy page.
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].
| App | Data-only eSIM on its own | With your home SIM on | Basis |
|---|---|---|---|
| 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 |
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