Fitbit Charge 3 Not Syncing: Causes & How to Fix

The Fitbit Charge 3 can be used on its own. However, connecting it to your smartphones will allow you to enjoy some extra benefits.

That being said, these benefits can only be enjoyed if your tracker syncs with your smartphone (Android or iOS). But what if it doesn’t?

Not to worry, in this article, we’ll be giving you some useful tips to fix the syncing problem between your Fitbit Charge 3 and your smartphone.

Stay with us.

fitbit charge 3 not syncing

Fitbit Charge 3 Not Syncing: Possible Causes of the Problem

Understanding the possible causes of the problem can help us figure out quick and effective solutions.

Let us take a look at them one by one.

The battery may be critically low: For your Charge 3 to sync with your smartphone, you need to have a good amount of battery power.

If the battery of your tracker or phone is critically low, then they may not sync.

Other Bluetooth devices may be turned on: The Fitbit Charge 3 syncs to your smartphone via a Bluetooth or Wi-Fi connection. If other Bluetooth devices are turned on, then they may interfere with your connection.

The sync feature may not be enabled in settings: If the sync feature is disabled on the app, then the tracker will not be able to sync with your smartphone.

It could also be that the Bluetooth feature on your device is turned off in settings.

The Fitbit app may be malfunctioning: The Fitbit Charge 3 app is great, but that doesn’t mean it is beyond malfunctioning.

If this happens, then the tracker may not sync to your smartphone.

It could also be that the app you are using is outdated, and needs to be updated to the latest version. We can’t rule this out.

Fitbit Charge 3 Not Syncing: Recommended Fixes

Try the tips below to sync your Fitbit Charge 3 to your smartphone.

Tip 1: Restart your device

A quick fix to a syncing problem is restarting your Fitbit Charge 3, as well as your phone. If the Bluetooth settings are in order, it would automatically reconnect when it comes back on.

If this doesn’t work, then you can try the next tip.

Tip 2: Refresh the connection between your devices

This tip has worked for so many Fitbit Charge 3 users who have equally experienced syncing problems.

There may be a little glitch in the connection, and a quick refresh is all you need to get both devices synced again.

Tip 3: Update the app

If the Fitbit app you have on your phone is outdated, then it may not properly sync with your tracker.

To be sure you are using the latest version of the app, visit Google play store (for Android), or the Apple Store (for iOS). Check for the latest version and update it.

You can also uninstall the version you are using then reinstall. Check to see if it syncs after doing so.

Tip 4: Troubleshoot the problem

You can try troubleshooting the problem by enabling the “always connected” and “all day sync” features on the app.

This works most of the time, but you can try the next tip if it doesn’t.

Tip 5: Restart the Fitbit app

This isn’t quite the same as uninstalling and reinstalling the Fitbit app. In this case, all you need to do is restart the app.

You can first reboot your phone, then restart the Fitbit app when the phone comes back on.

Tip 6: Charge your devices

If the battery of your Fitbit Charge 3 or your smartphone is critically low, syncing would be difficult.

In this case, charge your devices to at least 50%, then try syncing both devices once more.

Tip 7: Make sure other Bluetooth devices are turned off

If there are other Bluetooth devices turned on around you, then they may cause glitches between your tracker and your smartphone.

Be sure to turn off other Bluetooth devices as required.


With the tips listed above, you should have your Fitbit Charge 3 syncing with your smartphone in no time.

If the problem persists after trying all these tips, then your next move would be to contact Fitbit’s customer service for help.

We trust this article has been informative.

Thanks for reading!


  • Keith Rowland

    Keith Rowland is a seasoned electrician who enjoys fixing faults in home appliances and electronics. Being someone who loves writing, he shares on this blog, DIY tips on how to fix various devices within a few minutes. When he's not fixing stuff or writing a new blog post, he's playing with his two cute girls and their mom.