Change is afoot, and it's been a long time coming. After T-Mobile ( TMUS 0.93% ) officially kicked off its Un-Carrier campaign in early 2013, the domestic wireless industry was bound to change. CEO John Legere has spearheaded the company's Un-Carrier strategy, launching a number of aggressive pricing plans and other offers. T-Mobile has since followed up with a string of other new promotions and initiatives, tempting potential switchers to take the plunge.