Softbank Mobile is lowering their subscriber prices to encourage consumers to purchase the iPhone 3G. Now, how much you pay a month will be based on how much you actually use a month. Prior to the revision, subscribers had to pay ¥7,280 or $67 a month, but now the minimum is ¥2,990 or $27 a month. 
These revisions affect the Packet Flat-rate Full package, and how much you will actually pay a month depends on how much data transfer you use.
According to Slashphone, the data charges start at ¥1,695 for 20 MB and go up to ¥5,985 for 70 MB.
[via Softbank Mobile]
Hello from Tokyo. I feel that Softbank didn’t know exactly what the reception to the iphone would be here.They decided to go with a conservative plan in case it didnt sell.At least cover the costs.Hence mandatory flat data plan.Even if you just sent a few emails a month,the monthly charge is on the steep side.
Softbank 3G network is really,really improved since the Vodafone Japan days here.The Softbank 2G network is comparable to the states,ie:lousy. But in 2010 that horse will hit the glue factory.