b-mobile Helpdesk for VISITOR SIM (For inquiry about VISITOR SIM only) Telephone: Business Hours 7 a.m. to 11 a.m.
+81-3-6721-5032 (Calling from overseas network.)
03-6721-5032 (Calling from domestic network.) eMail: email@example.com
For customers who have already purchased b-mobile SIM card, please provide us your SIM card number starting from 070, 080 or 090 and what device your are using. That way we can check your SIM card status faster.