T-Mobile to Launch 4G LTE Service in 2013
How about rolling out 4G LTE service? T-Mobile said it plans to do exactly that as part of a $4 billion investment it will use to modernize its network and ramp up its 4G efforts.

"We want to be known for delivering the best value in wireless because of the advanced technology we deliver at an affordable price," said Philipp Humm CEO and President of T-Mobile USA. "Over the next two years, we’re prioritizing and investing in initiatives designed to get T-Mobile back to growth in the years ahead — beginning with the transformation of our network."
T-Mobile's ambitious investment is, in part, courtesy of a $3 billion break-up fee from AT&T, of which Ma Bell had to pay in cash and spectrum licenses after the acquisition attempt crumbled. The break-up fee gives T-Mobile the money it needs to build out its network to compete with the big boys (Verizon, AT&T, and Sprint).
T-Mobile said it expects to reach broad deployment of LTE, with service in the vast majority of the top 50 markets and 20MHz service in 75 percent of the top 25 markets, within the next two years.