Apple Watch Series 1 no longer transmitting workouts to iPhone

[mj_]

First off let me emphasize first and foremost that we are not looking at replacing it. She is perfectly happy with it and only uses its most basic features, and even those she tends to forget about (such as Apple Pay, which she forgets about roughly 12.725 seconds after I tell her about it). I've given up on providing my wife with the latest gadgets as she's simply not interested and won't use any of the bells and whistles. For her, the Watch is really just a fancy watch with workout tracking capabilities and notifications on her wrist, that's it. Updating to an SE or S6 is thus not really an option.

Recenty, her Apple Watch Series 1 running the latest watchOS 6.2.9 available for S1 has started showing some weird behavior. She does Yoga every morning and told me recently that her workouts no longer show up on her iPhone (XS Max, iOS 14.4.x I believe). My first suspicion was that the Watch had lost connection to her iPhone, which happens occasionally and can be easily fixed by rebooting the Watch. However, it is fully and successfully connected and works as expected otherwhise. She gets her notifications, she can ping her iPhone if she's misplaced it somewhere around the house, AutoSleep is recording and transmitting data from the Watch to the iPhone app, etc.. It's only the fitness data and workouts that aren't transmitted any longer.

Any ideas short of unpairing and repairing the devices?

 

[bricktop_at]

Did you reboot the phone too? Had an issue like this and rebooting both devices fixed it for me.

 

[mj_]

Yes, we've rebooted both devices. Miraculously, her workouts appeared on her phone yesterday in the afternoon without her (or me) doing anything. The reboots were performed in the morning so it took several hours for the devices to synchronize their data. This morning, her Yoga synchronized almost instantaneously with her phone as if nothing had ever happened.

I will have to keep an eye on this. No idea what's going on here but I feel like this is going to come back rather sooner than later to haunt me.

 

[bricktop_at]

The problem I still have, only with the S2 (I assume it's related to watchOS 6.x in combination with iOS 14.x), is that I have ghost entries in Health. Meaning the data from the watch goes into health, but under another device that shows up as "no longer paired". The paired device entry has no data shown.
Tried unpairing, setting up from new, setting up from a backup... nothing helped so far. Both my S2s do this, the S3 on watchOS 7 works as supposed.

 

[mj_]

I haven't checked her phone recently but I'm pretty sure I haven't noticed that yet. It also seems to be working fine now, today's Yoga session once again showed up on her iPhone practically instantaneously. I'll check her phone later for any "no longer paired" devices in Health.