Xfinity Mobile is offering $400 for iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max over 24 months. Other than iPhone 14 Pro Max, other models are available for Sept. 16 as of now. Apple webstore availabilty is near end of the October.
Here is the link: https://www.xfinity.com/mobile/shop?category=device&brand=apple&page=1
This offer is for New or Existing Customers w/ Activation of New Line within 30 Days for New Customers or Upgrade of New Line for Existing Customers within 15-Days via 24-Month Credits. Free Shipping is available.