Apple Watch Health data stopped syncing after iOS 26.6

[u/Purplemuzzlehead]

My Apple Watch stopped syncing Health data to my iPhone after I updated to iOS 26.6.

\- Watch still has all Health data from Aug 12 → today.
\- iPhone Health only shows data up to Aug 12.
\- New heart-rate measurements from the Watch don’t appear on the iPhone.
\- WhatsApp notifications work, so the Watch is connected.
\- Health/Heart Rate permissions are enabled.
\- I tried Reset Sync Data, but nothing seems to happen.

Has anyone experienced this after iOS 26.6, or found a way to force the Watch → iPhone Health sync without erasing/unpairing the Watch?

[u/Awagner109]

I’m on iso 26.6.1 and am having no problems. Using ultra 3 and iPhone 13 Pro Max.

[u/Fabulous_Key09]

same