Symptoms
- App shows 'last synced' from days ago
- Manual sync button spins without finishing
- Steps or sleep data missing from the app despite being on the band
- Sync worked before a phone update and then stopped
Likely causes
- CommonBluetooth connection not active between band and phoneThe band needs an active Bluetooth link to transfer stored data.
- CommonApp not allowed to run in the backgroundPhone battery optimization can prevent apps from syncing automatically.
- PossibleBand's internal storage full of unsynced dataBasic trackers have limited memory and can behave oddly when full.
- PossibleOutdated app or band firmwareSync protocols occasionally break across mismatched versions.
- Less commonAccount login expired in the appA logged-out session can silently block sync without an obvious error.
What to do
- Open the app and manually trigger a sync while keeping the phone close to the band.
- Check that Bluetooth is on and the band shows as connected in the phone's settings.
- Allow the app to run in the background and exempt it from battery optimization.
- Restart both the band and the phone.
- Update the app and the band's firmware if updates are available.
- Log out and back into your account in the app as a last resort before a factory reset.
When to call a pro
If sync failures continue after all basic steps and a factory reset, contact the manufacturer's support, since it may be a Bluetooth hardware fault.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.