AW Series 3 runs WatchOS 4 out of the box. iOS 11 is required for WatchOS 4 so you would have to update to iOS 11 to set up an AW 3 with your iPhone 7+.
AW Series 3 runs WatchOS 4 out of the box. iOS 11 is required for WatchOS 4 so you would have to update to iOS 11 to set up an AW 3 with your iPhone 7+.
What exactly does your Post contribute? Anyone can freely post on topic. That forum members post explains perfectly more in detail for others who may have questions in this thread for purposes of iOS 11/WatchOS 4, given the OP's post.