Walmart: $0 down and get a $300 gift card when purchased with AT&T Next, Sprint, or Verizon device payment plans. Begins 6 p.m. on Thursday, November 22 for in-store purchases. Begins Wednesday, November 21 at 10 p.m./9 p.m. CT for online.
BestBuy: Up to $150 off with Verizon, AT&T, or Sprint activation. Doors open at 5 p.m. on Thursday, November 22.
T-Mobile: Free iPhone XR when you add another line to your T-Mobile account and trade in an eligible device, including iPhone 6s, 6s Plus, 7, 7 Plus, 8, 8 Plus, and X. New incoming T-Mobile customers need to activate two lines, as well as trade in an eligible device.