T-Mobile has brought back its popular "fourth line free promotion" with Family Match, and this time around the carrier is offering customers the choice between 10GB per line or unlimited data. Previously, the carrier ran a limited-time promotion that scored you four lines with 10GB each for $120, and more recently had only been offering family plans with 6GB of data each. Now, the carrier has brought back the 10GB option, as well as introduced a new unlimited offering for the promotion.
With this, you'll be able to get four lines with unlimited talk, text and data for $150 a month — the same as three lines. The cost per line is $50, so if you were to have only two lines on your account the cost would be $100, three lines would be $150, and four lines would be the same. Like the last time, this promotion will only be available for a limited time. You don't need to open a new account, trade in a phone, or do anything else to be eligible for these plans, just simply head into your local T-Mobile store or give them a call to get your plan changed before it is too late.