( CNN ) -- T-Mobile is making a bid to become the wireless world 's `` un-carrier , '' rolling out a plan that will let users update their phones up to twice a year for a modest fee . That 's a sharp departure from the traditional model for wireless companies , which usually requires customers to complete a two-year contract before they can get a new smartphone at the discounted rate that makes them affordable . `` At some point , big wireless companies made a decision for you that you should have to wait two years to get a new phone for a fair price . That 's 730 days of waiting , '' said John Legere , president and CEO of T-Mobile US , in a written announcement . `` ( That 's ) 730 days of watching new phones come out that you ca n't have . Or having to live with a cracked screen or an outdated camera , '' he added . `` We say two years is just too long to wait . '' The company 's new JUMP ! plan will cost $ 10 a month per phone and includes insurance for phones that are damaged , lost or malfunctioning . Some wireless customers already pay for such protection . Customers can upgrade after being enrolled in the JUMP ! program for six months . At a New York event , T-Mobile also announced an expansion of its 4G LTE network , which it says will reach 157 million people in 116 metro areas across the United States . The announcement is part of T-Mobile 's newly aggressive approach as the carrier tries to move up from fourth place in market share in the United States . It trails first-place Verizon , then AT & T and Sprint . Research firm comScore says Verizon has about 31 % of the market , followed by AT & T at 27 % , Sprint at 16 % and T-Mobile at about 13 % . In March , T-Mobile took another big leap , announcing that it would offer wireless plans with no contract . It also began selling the iPhone 5 for $ 99 in April .
New T - Mobile plans let customers upgrade to a new phone up to twice yearly . The upgrade program , called Plus ! , will cost $ 10 per month . In March , T - Mobile started offering some plans with no upgrade . It 's all part of a push by T - Mobile to move out of fourth place among U.S. carriers .