Without a cell phone number, it is would be impossible to open any bank account anywhere in Japan. For a tourist, subscribing for a roaming plan or purchasing some voice-enabled SIM card without a number is easily available at most major electronic stores like LABI Yamada or BIC Camera.
But a phone number, that’s the big problem. Fortunately, Softbank has a solution to this riddle.
The Softbank Simple Style is a prepaid service where a they package a phone together with a USIM card. Nothing too fancy if it’s a number to work around the administration red tape.
It is quite expensive to make any phone calls using this service; and much more for SMS, Y!Mail and Data plan. But at least, there’s no 2 years contract to service which doesn’t make much sense if you’re not planning to stay in Japan for more than a couple of years.