T-Mobile US encourages smartphone promiscuity

T-Mobile US has a habit of doing things that people don’t expect, to such an extent that it’s now expected. One of the latest moves is to have a go at rejuvenating the subsidized smartphone model.
The T-Mobile JUMP! On Demand offering is not a new one, but it is one which has been given a bit of the Uncarrier love. It’s essentially a lease mobile contract, which allowed customers to exchange their device three times a year, but this has now been updated to once a month! The onl