T-Mobile will be launching a new buy a line, get a line offer today. In addition to this new offer, T-Mobile has brought back one of its iPhone promotions.  Buy a Line, Get a Line Offer Starting today, anyone with more than two voice lines can add a voice line and get another for free. This is suitable for the most popular plans offered by the Un-Carrier, such as Essentials, Magenta, Magenta MAX, and Simple Choice. iPhone … [read full article]