KDDI Mobile - KDDI to launch US MVNO, stop the presses! KDDI, Japan's number two cellphone carrier, totally blew our minds, everybody: they stated today that they'll be starting up an MVNO on Sprint in the US, name: KDDI Mobile. What's the point of yet another MVNO? (We're obligated to ask.) Well, besides giving Helio a run for their money in the Asian-carrier-gone-US-MVNO biz, maybe, just maybe w