T-Mobile defines the “limit” on its Unlimited LTE plan

Fact is that even "unlimited" plans have some sort of mechanic that is meant to discourage users that go over the top. AT&T, for example, has been accused of throttling "Unlimited" users' data after they used up a certain amount, which kind of goes against the way the carrier markets the plan. T-Mobile, on the other hand, claims that it doesn't drag speeds down, however, the 3% of its users that end up consuming "too much" data per billing cycle (month) will get their connections "de-prioritized".
But what constitutes as “using too much data”? The 3% guideline was vague to say the least and consumers could rarely know whether they have been “de-prioritized” for the month or not. Well, thankfully, T-Mo has added a line of information about the cap on its official website. Said line explains that users that will get the short end of the stick are the ones that have consumed more than 21 GB in the current bill cycle.
*Unlimited 4G LTE customers who use more than 21 GB of data in a bill cycle will have their data usage de-prioritized compared to other customers for that bill cycle at locations and times when competing network demands occur, resulting in relatively slower speeds. See t-mobile.com/OpenInternet for details.
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