Ive upgraded my S3 to ultra for this issue, as I was loosing gps and workout data constantly due to outdoor cycle would never resume workout. Even now 30% of my workouts are corrupted missing after resume should happen. The same goes for Ultra watch. I somehow managed to get it working recently and now out of 25km bike tour I get missing some 3-4km before it would pause and ABSOLUTELY no resume. Resume works better now but won’t do its job. I lost my believe in Apple Watch and my next watch will be the Garmin, my friends are laughing at those problems with Apple Watch Ultra.