Hi there, @oldson. Thanks for stopping by in the Fitbit Community Forums. I'm sorry to hear that your Charge 4 is not syncing anymore. I understand your concern, I will do my best to help you!
As a first approach, I suggest following the troubleshooting steps provided in this help article Why won't my Fitbit device sync?
If the issue persists, please try the steps below in the order listed:
- Unpair your Fitbit device from your phone's Bluetooth and Fitbit app.
- Unpair other Bluetooth devices that you may also have paired to your phone's Bluetooth settings.
- Force quit the Fitbit app.
- Turn off other Bluetooth connections when not in use. This can help to prevent connectivity issues or Bluetooth interference.
- Shut off your phone and turn it on after 1-2 minutes.
- Turn on the Bluetooth on your phone.
- Plug it into the charging cable and open the Fitbit app.
- Set up your Fitbit device.
- If there is no connection, restart your Fitbit device.
- Once your Fitbit device is paired and syncing, please proceed to set up your other Bluetooth devices to your phone again.
With the steps above, what I want you to do is to pair your Charge 4 first to your phone's Bluetooth settings before any other Bluetooth device is connected to your phone.
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