Glad your AWU3 works better.Same problem with the AWU1. Only voice control when I'm wearing my iPhone. The Apple Workout app has the same problemSince iOS 26. I tried resetting the AWU1 to factory settings. Nothing helped.
I also always had problems with the AWU1 recording heart rate correctly. (The Apple Workout app worked fine.)
I bought an AWU3. Everything works fine. Problem solved.
sorry, reply to Richo5
In terms of the heart rate if anyone else is having problems with that then the first thing to check is the health permissions for WorkOutDoors in Apple's Settings app. If they are not all enabled then enable them all (sometimes the heart rate will not appear if something apparently unrelated is disabled). If they are all enabled then disable them all; reboot both devices; and re-enable them. Sometimes the watch seems to lose permissions and that procedure nudges iOS into sending them again.