Swirly MMS2 doesn't work on iPhone 3G- Softbank Prepaid SIM

[luarbiasa]

Hi, I'm a Japanese.
I was very glad to hear that there was an app which enables iPhone to send MMS.
So I purchased it, but it doesn't work(cannot send MMS), even after activation and tried every one of setting in the link below.
http://www.swirlyspace.com/forum/viewtopic.php?f=10&t=1168&sid=6ece3fe3ce7bbd126d8111f2ab0501cc

The error message tells, "Failed to send MMS. Failed to activate MMS APN. Your MMS was not possible to send. The reason can either be a temporary error in your carriers network or that your settings are not correct."

But if I try this SIM card on another handphone, it works. So the problem seem to be in the settings.

What should do I do now? I really need your help...! Thank you in advance for your help...

About my iPhone:
3G(16G)
Jailbroken
iOS:4.2.1
Softbank(Prepaid SIM)

[tscrim]

Hi I used a combination of unlockit.co.nz to set the apn settings on the iphone and also vodafone settings in swirlymms and it worked.

swirly mms settings.
MMSC: mms/
Proxy: vfkkmmsproxy.vodafone.ne.jp
APN: mailwebservice.vodafone.ne.jp
Username: vodafonelive
Passw: qceffknarlurqgbl

[luarbiasa]

Thank you for your advice!
Although MMS2 still doesn't work, I appreciate your help very much : )

Does anybody else have a solution to this problem...??