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I can't sync my tracker

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After setup, your Fitbit tracker should automatically sync with your computer or mobile device as described in How do Fitbit trackers sync their data? If your tracker isn't syncing, verify the requirements below and then try the troubleshooting steps.

We're aware of an issue unique to Charge HR. If your Charge HR isn't syncing, see What's wrong with my Charge HR?

Requirements

Verify that you're meeting the requirements by choosing a section below. 
  • Fitbit Connect (Mac or PC)
    1. Fitbit Connect is installed. To check, make sure you see the Fitbit Connect icon User-added image located near the date and time on your computer. If you can't find Fitbit Connect, try the set up instructions again paying special attention to steps 1 and 2 to ensure you install Fitbit Connect. Once it is installed, you'll be guided through the set up process.
      If you tried to sync your tracker to your fitbit.com dashboard and received a "not working" error, see Why am I seeing a "Not working" error when I try to sync using Fitbit Connect? 
    2. Your tracker is paired with your Fitbit account. To check, log into your fitbit.com account and click the gear icon in the top right corner. You should see an icon representing your tracker in the drop-down menu. If you don't see an icon in this menu, your tracker wasn't set up properly with your account. To get set up, click the Fitbit Connect icon, click Open Main Menu, and then click Set Up a New Device. Fitbit Connect will walk you through the set up process.
    3. Your wireless sync dongle is plugged in and recognized by your computer.
      User-added image
      To make sure your computer recognizes the dongle, click the Fitbit Connect icon. If you see "Couldn't Find Wireless Sync Dongle" at the top, try plugging the dongle into a different USB port. Make sure you're using an actual port on your computer and not an accessory or USB hub.
  • Fitbit apps for iOS, Android, and Windows
    1. You installed the Fitbit app on a supported device. To see the most current list of supported devices, please go to http://www.fitbit.com/devices. Fitbit frequently adds support for new devices, so if yours isn't listed, check back soon. Also, please review any known issues with you Android device in Which Android devices have known issues with the Fitbit app?
    2. Your device software is updated to the latest version. You can check for software updates in your mobile device settings.
      • iOS—tap Settings > General > Software Update.
      • Android—tap Settings > About Phone or About Device > Android Version.
      • Windows 8.1—tap Settings > system > phone update.
    3. Bluetooth is enabled on your device. You can verify that Bluetooth is enabled in your phone settings.
      • iOS—tap Settings > Bluetooth.
      • Android—tap Settings > Connections > Bluetooth
        If you are running OS 6.0 (Marshmallow), please note that Google has changed the permissions required for Bluetooth syncing. You must turn on location services to sync your tracker (Settings > Location). For more information about the latest Google permission requirements, see Google's Android 6.0 Changes document.
      • Windows 8.1—tap Settings > system > Bluetooth.
      • Windows 10—tap Settings > Devices > Bluetooth.
    4. Your device is not managing multiple Bluetooth connections at the same time. For more information, see The Fitbit app for iOS is interfering with my other Bluetooth devices or The Fitbit app for Android is interfering with my other Bluetooth devices.
    5. You're not trying to sync with multiple devices or your computer after setting up call or text notifications. For more information, see Why is my tracker only syncing with one mobile device?
    6. An existing sync is not already in progress.
    7. For Android devices, turn on the Always Connected option in your tracker settings (tap the tracker tile twice) to improve the Bluetooth connection between your phone and tracker. Note that turning on this feature may cause the battery on your tracker to drain more quickly than normal.
    8. Your Android device is not in Power Savings Mode. This mode frequently causes the device to disable Bluetooth in order to save power.

Troubleshooting

If your tracker syncs with one computer or device but not a second device or your computer, see Why is my tracker only syncing with one mobile device? If all the requirements are met and your tracker isn't syncing, choose a section below for troubleshooting steps. Make sure your charged tracker is nearby.

  • Fitbit Connect (Mac or PC)
    1. Try initiating a manual sync:
      1. Click the Fitbit Connect icon and click Open Main Menu.
      2. With your charged tracker nearby, click Sync Now.
      3. You may be asked to sign in to your Fitbit account, after which your tracker should sync. If you see a message saying your tracker can't be found, wake it up by pressing its button (most trackers) or tapping it (Flex).
    2. Check if your tracker synced by clicking the gear icon in the top right of your fitbit.com dashboard. You'll see the last sync time below the image of the tracker.
    3. If your tracker didn't sync, restart your tracker using the instructions in How do I restart my tracker?
    4. If your tracker still won't sync, uninstall and reinstall Fitbit Connect using the instructions in How do I reinstall Fitbit Connect?
    5. If your tracker didn't sync, and you have access to a mobile device, try syncing with the Fitbit app.
    6. If you also sync with an Android device, have the Always Connected option turned on in the Fitbit app, and your phone is nearby when you try to sync with Fitbit Connect and your computer, your tracker will not sync with your computer. To sync with Fitbit Connect and your computer:
      1. In the Fitbit app, tap the tracker tile twice, and turn off Always Connected to avoid interference with your dongle and to sync with your computer.
      2. Turn off Bluetooth on your Android device.
  • Fitbit app for iOS
    1. Turn off Bluetooth, turn it back on, and then open the Fitbit app.
    2. If your tracker didn't sync, force quit the Fitbit app and open it again.
    3. If your tracker didn't sync, reboot your mobile device and then open the Fitbit app again.
    4. If your tracker didn't sync, restart your tracker. For more information, see How do I restart my tracker?
    5. If your tracker didn't sync, try syncing with your computer.
  • Fitbit app for Android
    1. Close the Fitbit app and open it again. A sync should occur whenever the app is opened.
    2. Turn off Bluetooth, turn it back on, and then open the Fitbit app.
    3. If your tracker didn't sync, reboot your mobile device and then open the Fitbit app again.
    4. If your tracker didn't sync, restart your tracker. For more information, see How do I restart my tracker?
    5. If your tracker didn't sync, uninstall and reinstall the Fitbit app.
    6. If your tracker didn't sync, try syncing with your computer.
    7. Try turning on all-day sync so that your tracker will periodically try to sync with the Fitbit app. Note that some customers find that this feature causes the battery on their mobile device or their tracker to drain more quickly than normal.
  • Fitbit app for Windows 8.1
    1. IF your tracker syncs with one Windows 8.1 device but not a second device or your computer, see Why is my tracker only syncing with one mobile device?
    2. Turn off Bluetooth, turn it back on, and then open the Fitbit app.
    3. If your tracker didn't sync, close the Fitbit app and open it again. A sync should occur whenever the app is opened.
    4. If your tracker didn't sync, reboot your mobile device and then open the Fitbit app again.
    5. If your tracker didn't sync, restart your tracker. For more information, see How do I restart my tracker?
    6. If your tracker didn't sync, uninstall and reinstall the Fitbit app.
    7. If your tracker didn't sync, try syncing with your computer.
    8. If your tracker didn't sync, set up your tracker as a new device following the instructions in How do I set up my tracker? Note that if you have not synced in over 24 hours, your activity data for previous days will be lost and only today's data will remain.
  • Fitbit app for Windows 10
    If your tracker will not sync with your Bluetooth-enabled tablet or computer running the Fitbit app for Windows 10, it’s possible that the Bluetooth signal is weak or compromised. If your tablet or computer does not support Bluetooth, you’ll need to insert the wireless sync dongle that came with your tracker into a USB port.
    User-added image

    To check Bluetooth on your tablet or computer:
    1. From the Start menu, go to Settings > Devices > Bluetooth. Bluetooth should be on, and you should see your Fitbit tracker on the devices list with the word “Connected” below it.
    2. If you see something other than “Connected”:
      1. Tap or click the tracker name and choose Remove Device.
      2. Make sure your tracker is nearby and wait for it to reappear in the devices list.
      3. When it does, tap or click the tracker again and choose Pair. Pairing can take several minutes but you’ll see a progress bar. Pairing is done when the status changes to “Connected.”
    If your tracker is paired but you’re still unable to sync, insert the wireless sync dongle into a USB port on your tablet or computer. It’s possible that the signal is compromised only temporarily and you’ll be able to sync later without the dongle. If your Bluetooth signal seems unreliable, consult the device manufacturer or Microsoft for troubleshooting tips.

    Occasionally you’ll receive a prompt to insert the dongle a moment before Bluetooth finds your tracker and syncs. To quickly check the last time your tracker synced, tap or click Account. The time of your last sync appears below the tracker name. If the sync isn’t recent, insert the dongle. A sync should initiate immediately. If it doesn’t, go to the dashboard, tap or click the ellipsis icon (three dots) in the top right, and tap or click sync now.
If you can't sync after trying the troubleshooting steps, please contact Customer Support so we can investigate.
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Last updated: February 2, 2016
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