T-Mobile just announced nationwide HD Voice in the United States, and now it has confirmed that it's focusing hardcore on delivering 4G LTE support to U.S. customers.

In fact, the carrier said that "LTE is coming on thick and fast" and that it will cover 200 million pops by the end of 2013. The first activation will occur in Las Vegas in just a couple of days. We can't wait to try it out, or see the first 4G LTE smartphones from T-Mobile.

"If you thought we went away, think again," T-Mobile CEO John Legere said. "We are attacking various players in the industry because our price is better and our speeds are better." Sounds like it's about to go toe-to-toe with Sprint, Verizon and AT&T as hard and as quickly as possible.