T-Mobile giving Las Vegas and Seattle residents a 7-day trial of its 4G network

The trial requires the use of an unlocked phone
So let's assume that you already have a phone that was unlocked prior to Saturday. To take advantage of the trial, you fill out a form online and receive a confirmation code. You then proceed to the nearest T-Mobile store with the unlocked phone and the code, and the seven days will begin. The carrier says it has recently upgraded its HSPA+ 4G service in those two cities and it is now "faster and more dependable".
Las Vegas is expected to be the carrier's first LTE market and the service could debut soon.
source: TmoNews

T-Mobile is offering residents of Las Vegas and Seattle a chance to test its 4G service free for one week
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