know that ponying up the dough to start an MVNO here is probably not your best shot at striking it rich. One after another has fallen flat, even ones that had millions (and millions) in marketing dollars behind 'em. That said, Japan's own NTT DoCoMo is mulling the possibility of fully entering the US cell market next year, offering up smartphones and "other high-performance handsets with its i-mode mobile internet service." We're told that the operator may start as an MVNO (mobile virtual network operator), leasing capacity from T-Mobile USA or AT&T until it decides on its next move. Call us crazy, but we're guessing it just might have a shot here on US soil if it snags the iPhone, enables all those 3G services that have been running for years on other platforms and only charges one (as opposed to three or four) human limbs for a monthly plan.