Jump to new upgrades without ETFs for $10 a month. T-Mobile's new Un-carrier twist is Jump!, which enables people to upgrade their phones when they want, up to twice a year as soon as six months from enrollment without an upgrade fee. It begins July 14 along with a new $100 a month family plan. To illustrate how smartphone owners hate to wait, those who share their #Hate2Wait stories on Facebook and Twitter could be a winner of one of 730 Samsung Galaxy S 4 smartphone prizes from T-Mobile(see exact entry details below).