Deal DetailsLast Edited by TattyBear October 14, 2015 at 08:46 AM
According to their http://www.t-mobile.com site:
Hurry now! Get 4 lines for the price of 3. At just $30 per line/mo.
Limited-time offer. Get unlimited talk, text, and data on our network, including up to 10GB of 4G LTE data per family member for only $30 per person with four lines.
Fine print says 4 line min. 10GB data required on all lines.