T-Mobile is fond of using CES to shake things up, and that's certainly true this year. The carrier is making a few moves that will ideally simplify your experience and lower your real-world costs... or at least, tell you the truth. It's introducing a KickBack feature on January 22nd that will pay you if you're miserly with your data on a One plan -- use 2GB or less per month and you'll get $10 back. It's not as flexible as Google's Project Fi and its pay-for-what-you-use approach, but it could be a strong lure if you think unlimited data is overkill. That's a good thing, too, as unlimited is your only choice going forward.