Wonder just how much it costs to phase out iDEN and WiMAX networks and put all your eggs in one, CDMA / LTE-flavored basket? Well, Joe Euteneuer, Sprint's CFO, just offered up a frank answer here at its "Strategy Update" event: $10 billion over the next two years. Ultimately, he assures all the suited-up financial analysts in the room, the company should save $10 billion to $11 billion through 2017 (as that handy slide up there breaks down), with $4 billion of that resulting from not having to maintain the 'ol ball and chain
