T-Mobile was not content with a single round of Black Friday deals. That's what regular carriers do, and as we are constantly reminded, T-Mobile is an un-carrier. Tmo is giving away free in-flight WiFi, $200 for switched lines, and more (sort of) free phones.
In the last batch of sales, there was a free Galaxy S7 offer. That offer has been expanded to encompass several more devices including the Galaxy S7 Edge and LG V20 (and iPhone 7, but whatever). These phones are only free in the sense that T-Mobile credits your bill every month for the phone's finance payment, and even then you only get the full amount if you trade in certain devices. For example, the V20 is free when you trade in a GS7 Edge, iPhone 7 Plus, or another V20 (presumably another carrier version). Lesser phones like the GS7 or iPhone 6s get you an almost free V20 ($100 total). You can see the full pricing break down at the links above. Note, you still have to pay tax on the full amount of the phone.
T-Mobile is also offering $200 per line that you switch over from another carrier and put on T-Mobile One. This is paid in the form of a prepaid Mastercard and is separate from the ETF reimbursement. You can get up to $2400 total in this deal. I'm not sure who has 14 lines to move, but okay. Lastly, everyone gets a free hour of domestic Gogo in-flight WiFi through November 26th. That's actually everyone, not just T-Mobile customers.