T-Mobile’s let loose a quiet promotion for residents of Seattle and Las Vegas in the past few weeks and with it coming back onto my radar, we can only hope this deal extends to other markets in the future. T-Mobile isn’t keeping this one under any sort of wraps as my memory was refreshed after a @tmobile retweet last night by someone taking advantage of this opportunity.

According to the T-Mobile.com landing page for this 7 day FREE trial, you must bring an unlocked device and fill out a registration form. A compatible unlocked phone is of course required and given the restrictions surrounding that now, we’ll just let you figure out how to handle that one on your own. Regardless, it’s pretty clear based on this page that T-Mobile is still eager to grab some AT&T customers and directly going after them.

Seattle and Las Vegas residents can hit www.t-mobile.com/tryfaster for more details.

“We’ve just modernized our nationwide 4G network to be faster and more dependable in Las Vegas. And to prove its, we’ll let thou try your current smartphone on our network for a SEVEN DAY FREE TRIAL. This is truly a free trial with no hassles or commitment. Get started anytime between 1/14/2013 and 2/11/2013, and discover the difference for yourself.”