U.S. carrier Sprint Nextel, which launched its LTE service just a few months ago, has hit a major milestone by selling more than million LTE devices. The carrier's CEO Dan Hesse disclosed the information at the Goldman Sachs Communacopia Conference on Wednesday, Sept. 19.

According to Hesse, the network provider's biggest LTE sellers so far have been the Samsung Galaxy S3 and HTC Evo 4G. Hesse also said that customers are attracted to Sprint's unlimited smartphone data plans.

Sprint initiated its first LTE services in five cities in July but the carrier will expand to over 123 million POPs by year end.

Hesse believes Sprint's success lies in the fact that it has managed to introduce a difference in the carriers' pricing plans. While Verizon and AT&T's shared data plans make it more complicated for customers to keep track of how much data different family members are using, Sprint's easy plans made it easy for the company to set a different brand positioning.

"We believe that consumers want peace of mind and that insurance," Hesse said. "We provide that as part of unlimited."

Meanwhile, Apple's newest flick iPhone 5 will also arrive on the network shortly which in coming days will fetch more customers for Sprint.