I Used B Mobile a year ago in japan ( they delivered to my hotel before i landed), worked out well for data ( no voice at that time),

Got this email from them , might help others ( As i havent used them for 1 1/2 years i cant attest to their current service)
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Dear Sir/Madam,

Thank you for always using b-mobile.
We send this e-mail to our customers who bought the b-mobile VISITOR SIM before.

In addition to the VISITOR SIM, We would like to introduce our new service for foreigners ?
"PAYG SIM".

There was no voice SIM cards for visitors before and it was difficult for them to make phone
calls in Japan.
But now you can use "PAYG SIM" to make international and/or domestic calls, to send SMSs, and
to us 3GB data amount.

Since it is prepaid, there will be no additional fee.
For more details about "PAYG SIM", please visit following page:
http://www.bmobile.ne.jp/payg_sim/

We are looking forward to your next visit to Japan.

// Contact information for inquiries //------------------------------

b-mobile helpdesk
E-mail: [email protected] (English,Japanese)
Number: 03-6721-5032 (7:00-11:00)(English)
03-5776-1700 (9:00-18:00)(Japanese Only)

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