Filed under: CellphonesWhat the heck is going on here? Despite the overwhelming popularity of gizmo-heavy mobile devices in Japan, working with megacarrier NTT DoCoMo must be a losing proposition for many of its manufacturing partners, because just days after Mitsubishi's announcement of its withdrawal, a fresh Nikkei report indicates that Sony Ericsson is raising the white flag as well to divert attention and resources to less saturated and more profitable markets. Apparently, DoCoMo will bear the brunt of the downsizing, while Sony Ericsson's partnership with KDDI -- a CDMA carrier -- will continue. [Warning: subs
