T-Mobile has moved beyond the trial stage. Lots of Android 4.4 devices ship with an IPv6-only APN, and a 464XLAT daemon that provides connectivity to legacy ap

T-Mobile has moved beyond the trial stage. Lots of Android 4.4 devices ship with an IPv6-only APN, and a 464XLAT daemon that provides connectivity to legacy apps, like Skype. If it's still just a trial, then I can't imagine how they'd get their stats up to 15% so quickly.