The company, which markets its mobile services using the au brand in Japan, will not initially have to face the difficulty and expense of setting up its own network in the US. Rather, it will operate as a mobile virtual network operator (MVNO), using the CDMA network belonging to Sprint Nextel.
KDDI Mobile , as the new company will be known, is aimed mainly at Japanese people living in the US, which will disappoint the booming numbers of Japanophile gadget fans in that country.
Fortunately, they don't need to fret about missing out on the high-end phones Japan is famous for, as KDDI Mobile will initially offer only the rather uninspiring choice of a drab Sanyo 2400 handset or an LG 225.
Putting aside the question of why anyone, Japanese or otherwise would not just go for the better selection of phones on Sprint, it's interesting to note that media coverage so far has focused on the absence of 'cool' Japanese handsets at the new company's launch.
As anyone who's scratched beneath the surface can testify, the other side isn't always greener. Phones in Japan may have more, newer technology packed into them but that doesn't mean they aren't often clunky, slow and disappointing.
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J Mark Lytle was an International Editor for TechRadar, based out of Tokyo, who now works as a Script Editor, Consultant at NHK, the Japan Broadcasting Corporation. Writer, multi-platform journalist, all-round editorial and PR consultant with many years' experience as a professional writer, their bylines include CNN, Snap Media and IDG.