Do I always have to have my iPhone if I have iwatch 3
How on earth did I miss this…
In principle you should be able to just open the app, tap to start earning, do your run/walk/dance/cycle or whichever activity without the mobile being on your person. Then when you return just press stop and the steps will be sent for verification via your mobile or over WiFi… However, problems have been highlighted recently when using a secondary runtracking app on your watch. For example if you use Strava, Apple Workouts, MapMyRun or similar app with a watch app, then you will need your mobile too.
Hope that helps you out if you haven’t already resolved it.