Dan Hesse, CEO of Sprint, really loves having the iPhone on Sprint. Elizabeth Woyke, writes for Forbes:

The iPhone is so data-efficient, [Hesse] said, it will help Sprint keep its mobile data plans unlimited.

Good news for Sprint customers. AT&T users are still healing from the gouge wound back when AT&T was all, we can’t handle all the iPhone data, and so they held back features (tethering) and started charging more for others (data plans).

The iPhone Is Helping Sprint to Keep Their Unlimited Data Plans