T-Mobile is amping up Un-carrier 2.0 with the introduction of the JUMP! program, and is introducing the lowest monthly cost to get an iPhone 6 when you trade-in your smartphone. With T-Mobile’s new JUMP! On Demand, one monthly phone payment covers the cost of a new smartphone and gives you the freedom to swap it for a new one anytime you like at no extra cost. Which means you don’t pay a penny to walk out the door with your new smartphone today. No fees to upgrade whenever you want, no waiting and no worries about paying off your old phone when you upgrade.

Here’s how JUMP! On Demand works: Get a new smartphone for zero out of pocket with qualifying credit, and zero sales tax due today, followed by one monthly payment that includes the cost of that new smartphone and, for free, the freedom to upgrade whenever you want. When you want a new smartphone, just swap your old phone for a new one. Customers with JUMP! On Demand can upgrade up to three times a year.

When you get a smartphone with JUMP! On Demand, your monthly payment is about the same as it would be with regular financing, and there’s no extra $10 monthly program fee.

Existing JUMP! customers can get a new smartphone with JUMP! On Demand the next time they upgrade, and won’t have to pay that extra $10 per month because the ability to upgrade whenever you want is now included in your monthly phone payment. And, if you still want device insurance (Premium Handset Protection), it costs $8 per month.

In addition, for a limited time, you can get iPhone 6 with 16GB at a monthly cost of $15 a month with JUMP! On Demand when you trade-in your current smartphone.

With Jump! On Demand, you make payments on your phone for 18 months. After 18 months, you can turn in your phone with nothing more to pay, or upgrade to your next new phone and start a new plan, or make a final payment and keep your phone. If you keep your phone and make the final payment, the total of your payments will equal the retail price of the phone. In addition, T-Mobile's customers can pay off their JUMP! On Demand plan at any time by paying the remaining payments in advance, and keep their phone without penalty.

JUMP! On Demand is available in T-Mobile stores nationwide starting June 28th.