Overseas Carriers's list for international SMS transmission
International SMS messages can be sent and received between all users belonging to the above carriers, with some exceptions. For the conditions regarding the exception of possible recipients, please see the notes.
In cases where you have transferred your phone number from another carrier to SoftBank using MNP (Mobile Number Portability), or the recipient has changed his/her carrier, international SMS may not be available.
For certain models, when the maximum character count is exceeded for a SMS message, the message may not be received/sent.
Communication charges may result even if your International SMS is not delivered successfully.
You can enjoy the benefit of exchanging International SMS with the users of above-listed carriers with some exception.In such cases, the corresponding data fees will be charged.