Originally Posted by the-economist
What does the UK have to do with any of this? We're talking about Japan.
Everything. The 8703e was a North American device that operated on CDMA 1xEVDO 850/1900 only. Being that you are not from NA, I'm 99% certain you've never used one, and thus wouldn't know whether or not it worked in Japan.
That said, while the device does partially work (voice and SMS only, no data), it's a very old device and not even close to being the best choice for roaming in Japan. As we've already established, 3GSM devices such as the 9000, 95XX, 96XX, and 9700 are the best choices, and from my experiences in Osaka and Tokyo, both NTT DoCoMo or SoftBank are about the same in service quality.