Here's an interesting nugget from the earnings call. I know there was a lot of speculation as to how much Sprint was spending on the iphone.

“Our ultimate spend with Apple to depend on many variables including anticipated rate of future subscriber growth, number of different devices offered and the cost of devices offered. We anticipate outperforming the current contract minimum commitment of $15.5 billion, for the iPhone, over the four-year period,” said Euteneuer.
http://www.zdnet.com/blog/btl/sprint...t+All+Blogs%29

Also this:

We expect that customer lifetime value for the iPhone customer to be at least 50%, yes, at least 50% greater than a typical smartphone user. Driven primarily by more efficient use of our network and lower churn. In addition, not reflected in this chart, is the upside of more, new revenue to spring, new fans offset the fixed cost of our stadium, if you will, because we expect the iPhone to generate a significantly higher number of new users to Sprint.