Sprint is making sure everyone knows they remain the only major iPhone carrier in the U.S. to offer unlimited data plans. In fact, they will still carry that distinction even if Apple’s next handset arrives with 4G/LTE capabilities, according to CNET.

Even though his company continues to lose money, Sprint CEO Dan Hesse insists there will be no change in how they market the iPhone.

I’m not anticipating the unlimited plan would change by that point,” he said. “That’s our distinctive differentiator.”

Calling the Sprint iPhone, “a marriage made in heaven,” Hesse says they are doing quite well, despite rough seas.

In the previous quarter, the third largest U.S. carrier activated 1.5 million iPhones, with 44 percent coming from customers new to the carrier. This comes despite Sprint posting an $863 million loss during the same period.

This compares to AT&T, which activated 4.3 million iPhones during the quarter, and Verizon Wireless, which saw new iPhone activations of 3.2 million.  Apple announced yesterday that worldwide 35 million iPhones were sold.

Sprint, which began selling the iPhone in October, offers unlimited data plans starting at $79.99 per month for individuals and families.

Current pricing is as follows:

Sprint Data Plans

Sprint Data Plans

As a reminder, Apple will most likely introduce their next iPhone sometime later this year, either at WWDC 2012 or later.