English Inquiry Form

Contact after purchase

  • Please enter your inquiries.
  • Please provide us with as much information as possible.
    For example, if you received an error message, let us know what that message says so that we may promptly assist you.
  • Visit our FAQ page before sending your inquiry.
  • Visit the Supported Device page for devices that we can assure compatibility.
    The use of Visitor SIM with all other devices not found on this list would be at the risk of the customer.
  • For Device setting please visit APN Setting page.
  • 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.

Personal Information

SIM card Information

(11 digits starting from 070, 080, or 090. No hyphen.)

(2 alphabets and 13 digits)

Your Device Information

Your Device Information 2


Question [Required]

Protection of Personal Information
Japan Communications Inc. uses its customers' personal information for the purposes stated in the Privacy Policy.
Regarding the details on the privacy protection policy and the requests for release, revision, or deletion of the personal
information, please contact the b-mobile Personal Information Inquiry Center shown in our web-page for the Privacy Policy.