Created: 02/24/2014 7:12 AM WHEC.com
T-Mobile has changed its “JUMP” plan to allow those customers to upgrade their phones at any time. They are no longer limited to two upgrades per year.
What's the catch? You have to have paid at least half of the cost of the phone before upgrading it. That means you might have to fork over some cash if you're not at the halfway point in payments.