Kardena smartwatch is not syncing data with the app

Is your smartwatch shown as connected, but your steps, sleep data or other readings aren’t appearing in the app?
If so, data synchronisation may have been interrupted.

1. Check the connection status

Open the app and check whether the smartwatch is shown as connected.

2. Run a sync

Open the app's home or device page and run a refresh or manual sync, if this function is available.

Then wait a moment until the data transfer is complete.

3. Restart Bluetooth

If no data is being transferred:

1. Close the app.
2. Turn off Bluetooth.
3. Wait a few seconds.
4. Turn Bluetooth back on.
5. Open the app again.
6. Check the synchronisation again.

4. Allow background activity

Make sure the operating system does not automatically close the app in the background.

5. Restart your smartphone and smartwatch

Completely restart both devices and then open the app again.

⚠️ Important – avoid data loss:
Do not rush to reset the smartwatch to its factory settings if it still contains data that has not yet been synchronised. This data may be lost as a result of a factory reset.
💡 Tip:
If only one specific type of data – such as sleep data – is missing, while other readings are syncing, there is probably no underlying Bluetooth issue.

Updated on: 10/09/2026