I've already seen a similar question that doesn't give a valid answer to me: In Xcode I see (no paired Apple Watch) even though the watch is paired and the watch's UDID is registered
I really cannot understand how to have my Apple Watch working on Xcode. Even if I create a new project or if I add a watch target to an existing app I always see in the device choice this status "My iPhone (No paired Apple Watch)" but my Apple watch IS paired... Sometimes the message changes and I get "My iPhone (Paired device not available for development)". My current environment is fully updated to the latest software versions (Xcode, WatchOS, iOS and OS X).
Are there any magic solution to make it work?!
Just experienced this. It was caused because the ios app which contains the watch app was out of date on the phone. After switching target to the ios app and building and run it on my phone, I was then able to switch back to the watch app and successfully run it on my watch.
Xcode Version 8.2.1 (8C1002). macOS 10.12.3 (16D32).