Back in March when the Galaxy S7 and S7 edge launched, T-Mobile came out with a great deal for Samsung's handsets - namely, you could buy one, and get one free. Yes, a BOGO thing. It was available for a limited time, and unfortunately went away eventually.
Well, now it's back. Sort of. This weekend only, you will once again be able to Buy One, Get One free if you choose the Galaxy S7 from the magenta carrier. Caveats apply, of course. First off, the deal will only be live between 6 AM PT on Friday, November 11, and 11:59 PM PT on Sunday, November 13.
Second, you need to use T-Mobile's Equipment Installment Plan for the first phone, and add a line for the second (free) one. You'll get 24 monthly credits for the second device after you've done so. The deal will be available in T-Mobile stores, via telesales, and online.