Why Won’t My Fitbit Sync? Common Fitbit Issues and How to Troubleshoot Them

“Why won’t my Fitbit sync?” Mary muttered amidst confusion and pain. Her Fitbit device, which she has been using to monitor her fitness journey, even a day before, is all of a sudden acting up. She has tried all she can to make it work well but her efforts have been proven less effective.

In case you’re wondering what Fitbit is, let me explain a bit here. FitBit devices are excellent tools for tracking your fitness journey. It helps you stay on top of your health goals by monitoring steps, sleep, heart rate, and more.

Every step counts when you’re on a fitness journey, and your Fitbit is there to ensure not a single one goes unnoticed. But what happens when your digital fitness companion stops cooperating and you’re left asking, “Why won’t my Fitbit sync?” This issue can prevent you from accessing the full benefits of your device, leaving you without updated data.

Let’s face it, a Fitbit that doesn’t sync is a demotivating friend. All those hard-earned steps and well-deserved sleep stats sit trapped on your device, unable to join the party in the Fitbit app. This can be really frustrating, almost making you give up on your fitness journey due to the inability to track your progress.

Not to worry; we are here for you. Just take a deep breath. In this article, we’ll diagnose some common reasons why your Fitbit won’t sync and provide detailed troubleshooting steps to get you back on track. Best believe you’ll find an answer and possible solution to why your Fitbit won’t sync after reading and following through.

 How Fitbit Sync Works

Fitbit devices sync by connecting to your smartphone, tablet, or computer via Bluetooth. This process involves transferring data from your Fitbit device to the Fitbit app installed on your chosen device. When you open the app, it searches for your Fitbit device within its range and initiates the syncing process automatically.

Once connected, your Fitbit collects and sends health and fitness data, such as steps taken, heart rate, and sleep patterns, to the app on your phone or tablet. That is where it is being analyzed and displayed in an easy-to-read format. From there, you can monitor your progress, set fitness goals, gain insights into your overall health, and stay motivated. But when it fails, the pivotal question arises: “Why won’t my Fitbit sync?”

Let’s dive into the mechanics of Fitbit syncing to understand this better.

Common Reasons Why Your Fitbit Won’t Sync

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1. Bluetooth Connectivity Issues

First things first, check your Bluetooth connection. One of the most common reasons why your Fitbit won’t sync is due to Bluetooth connectivity issues. Imagine your tap being cut off from its source; there will be no water. It would have to be reconnected to the source to be able to have uninterrupted water supply.

Same way, your Fitbit relies on Bluetooth to communicate with your device, and if there’s a problem with the connection, syncing can fail. Always check that Bluetooth is enabled on your smartphone or tablet and that your Fitbit is within range, which is about 20 feet.

2. Outdated Fitbit App

An outdated Fitbit app can also cause syncing problems. The developers regularly update the app to fix bugs and improve performance. If you haven’t updated the app recently, this could be why your Fitbit won’t sync. Check for updates in your device’s app store and install any available updates.

3. Device Compatibility

Sometimes, it could be that Fitbit may not be compatible with your device, which can lead to syncing issues. Fitbit supports a wide range of devices, but it’s always good to check the compatibility list on https://www.fitbit.com to ensure your smartphone or tablet is supported.

4. Software Glitches

Like any other electronic device, Fitbits can experience software glitches. These glitches can interrupt the syncing process, causing it to fail in transferring data. Restarting the Fitbit app can often resolve these issues.

5. Low Battery

A low battery can prevent your Fitbit from syncing. Ensure that your Fitbit has enough charge before attempting to sync. A fully charged Fitbit is more likely to complete the syncing process without issues.

6. Interference from Other Devices

Other electronic devices or Wi-Fi networks can sometimes interfere with the Bluetooth connection between your Fitbit and your smartphone or tablet. Try turning off other Bluetooth devices or moving away from potential sources of interference to see if this resolves the issue.

7. Configuration and Settings

An error in the configuration settings of your app could be the cause of all the troubles you’re facing trying to sync your smartphone and your Fitbit device. Double-check that the Fitbit app is configured correctly and has the necessary permissions to access Bluetooth and location services, which is sometimes needed for syncing.

Troubleshooting Steps to Resolve “Why won’t my Fitbit Sync”

Now that we’ve covered some common reasons why your Fitbit won’t sync, let’s look at detailed troubleshooting steps to take in order to get your device back on track.

Step 1: Check Bluetooth Settings

  • Ensure Bluetooth is enabled on your smartphone or tablet.
  • Make sure your Fitbit is within 20 feet of your device.
  • Try toggling Bluetooth off and then back on.

Step 2: Restart Your Fitbit

  • For most Fitbit models, press and hold the button on your device for about 10 seconds until you see the Fitbit logo.
  • Release the button and wait for your Fitbit to restart.

Step 3: Restart Your Smartphone or Tablet

  • Turn off your device and wait for a few seconds before turning it back on.
  • Open the Fitbit app and attempt to sync your device again.

Step 4: Update the Fitbit App

  • Go to your device’s app store.
  • Search for the Fitbit app and check for updates.
  • If an update is available, install it and try syncing again.

Step 5: Reinstall the Fitbit App

  • Uninstall the Fitbit app from your device.
  • Restart your smartphone or tablet.
  • Reinstall the Fitbit app from your device’s app store.
  • Open the app and attempt to sync your device again.

Step 6: Check for Software Updates on Your Device

  • Ensure that your smartphone or tablet’s operating system is up-to-date.
  • Go to your device’s settings and check for software updates.
  • Install any available updates and try syncing your Fitbit again.

Step 7: Reset Your Fitbit Device

If everything else fails, resetting your Fitbit to factory settings can resolve persistent syncing issues. Note that this will erase all data stored on your device, so ensure your data is backed up before proceeding.

  • Go to the settings menu on your Fitbit.
  • Select “About” and then “Factory Reset.”
  • Confirm the reset and wait for your device to restart.
  • Set up your Fitbit again using the Fitbit app.

Step 8: Contact Fitbit Help Centre

If you’ve exhausted all the troubleshooting steps and your Fitbit still won’t sync, it’s time to reach out to Fitbit support. They can offer more in-depth assistance and help you identify any underlying issues.

Preventing Future Syncing Issues

Once you’ve resolved the syncing problem, there are a few steps you can take to prevent future issues.

1. Regularly Update the Fitbit App

Keep your Fitbit app updated to ensure you have the latest features and bug fixes. This can help prevent many common syncing issues.

2. Charge Your Fitbit Regularly

Ensure your Fitbit has enough battery by charging it regularly. If you fully charge your device, it will be less likely to encounter syncing problems.

3. Maintain Device Compatibility

Check Fitbit’s compatibility list periodically to ensure that your smartphone or tablet remains supported. If you upgrade your device, make sure it’s compatible with your Fitbit.

4. Avoid Interference

Minimize interference from other electronic devices and Wi-Fi networks by syncing your Fitbit in a location with fewer potential sources of interference. If you notice too many WiFi sources open around you, you could move away, or if you can, ask the source owners to switch off their networks for a few minutes while you sync your mobile device with your Fitbit.

5. Perform Regular Reboots

Regularly restart your Fitbit and your smartphone or tablet. This simple practice can help clear any temporary software glitches that might prevent syncing between your devices.


Syncing issues can be frustrating, but with the right troubleshooting steps, you can resolve most problems and get your Fitbit back to tracking your fitness journey accurately. When you discover the reason why your Fitbit won’t sync and follow the steps outlined in this guide, you can ensure a smooth and uninterrupted experience with your device. Remember, regular updates and maintenance can go a long way in preventing future syncing issues, allowing you to focus on achieving your health and fitness goals.


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