Apple introduced products like the Apple iWatch and the improved and well, a bigger iPhone. Microsoft had a nice start when CEO Satya Nadella took over in February. Facebook dominated the social networking platform with its capture of WhatsApp. But, it was T-Mobile who dominated the tech companies in the 2014. Because of T-Mobile's actions in 2014, wireless carriers have fallen over one another trying to cut prices. Sprint offered to halve their bills, Verizon and AT&T lowered rates while offering more data for your dollar, and you can now get a smartphone for $0 down at any carrier. There is real competition in the industry for the first time in forever. T-Mobile started its "un-carrier" marketing push in March 2013, doing away with contracts, letting people switch phones every few months, and providing customers with free international roaming. This year, T-Mobile one-upped itself . It offered to pay off rivals' early termination fees, announced that streaming music wouldn't count against customers' data plans, started giving out smartphones for free seven-day loans, provided free in-flight connectivity for customers and let people roll over their unused gigabytes. Yet T-Mobile's moves have been unpopular with shareholders -- the stock is down 21% this year, way more than Verizon and AT&T's far more modest swoons. Much of that has to do with the fact that T-Mobile failed to strike a merger with potential suitors Sprint or Dish . But shares also suffered as investors worried about how the marketing campaign affected T-Mobile's profit. Many Wall Street analysts believe that T-Mobile can't possibly keep this up -- it will eventually run out of money or get scooped up by a bigger player. But T-Mobile insists that it is financially viable and can continue its "Un-carrier" strategy indefinitely. If T-Mobile keeps impressing and adding customers next year the way it did in 2014, there might just be a case for its long-term success.