<< These phones are called PHS. They are only available in Japan and Taiwan. They have much lower frequency than GSM and thus is used mostly in metropolitan areas. They are testing 3G PHS now in Japan and these PHS phones will come to USA within two years since NTT DoCoMo already partnered with AT&T. THey are building a network now. >>
Close but not quite. PHS works on 900mhz, basically it's a cordless phone on steroids. This an i-Mode phone, a regular NTT cell phone so it'll work on a PDC network running at 800mhz or 1.5GHz. The new 3Ghz FOMA phones are I believe are W-CDMA.