Never one to stop thinking of clever new ways to add new customers, T-Mobile on Tuesday unveiled a new limited-time promotion that will offer a new Simple Choice family plan that features unlimited LTE data. According to T-Mobile, the new promotion will start at $100 a month for two separate lines and can go “all the way up to 10 people for just $40 more per line.” In other words, the plan will cost $140 per month for three lines, $180 per month for four lines, $220 per month for five lines, and so forth.

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In addition to its unlimited family data plans, T-Mobile also says it’s bringing back its promotion that offers you 10GB of data across four different lines for $100 per month. This particular promotion means that each line gets 2.5GB of data to use per month and when you’ve used up all your data you’ll be throttled down to a slower speed instead of getting hit with overage fees. If you sign up for this promotion, you’ll get 2.5GB of data per line through all of 2015, although you’ll get knocked down to 1GB of data per line at the start of 2016.

Both promotions begin on December 10th and will last for a limited time. T-Mobile has not yet announced when these promotions will end although the carrier tells BGR that you should be able to take advantage of them at least until the end of 2014.

To learn more about these promotions, check out T-Mobile’s full release by clicking the source link below.