b-mobile Helpdesk for VISITOR SIM (For inquiry about VISITOR SIM only)
Telephone (We will be closed on May 3rd, 2018)
Business hours 9:00 - 12:00 (English and Japanese)
03-6721-5032 (calling from domestic network)
81-3-6721-5032 (calling from overseas network)
Business hours 12:00 - 18:00 (Japanese only)
03-5776-1700 (calling from domestic network)
Inquiry Form We will reply within 3 business days.
However, we may not be able to send you a quick response, or even any response in some cases.
We can not answer any inquiries which is written other than English.