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Why won't my Fitbit device sync?

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After you create a Fitbit account and set up your device, the data your Fitbit device collects syncs with your Fitbit dashboard. For more information, see How do Fitbit devices sync their data? and Which phones and tablets can I use with my Fitbit watch or tracker? 

Choose your device type for more information.
Having trouble syncing with your iPhone or iPad? Try removing the Bluetooth connection between your phone and your Fitbit device:
 *On your phone, tap Settings User-added image > Bluetooth User-added image > the information icon User-added image next to the name of your Fitbit device > Forget This Device.
 *Open the Fitbit app and set up the connection again. You should receive a message asking you to allow your Fitbit device to pair with your phone. Tap Pair to approve the request.

Sync your Fitbit device automatically when you open the Fitbit app or manually by tapping your profile picture > your device tile > Sync Now

If your Fitbit device doesn't sync, follow the troubleshooting steps below depending on your device:


iPhone or iPad

Requirements

  • Your iPhone or iPad is running the latest version of iOS. To check, tap Settings User-added image > General > Software Update
  • Your Fitbit device is up-to-date. For more information, see How do I update my Fitbit device?
  • The Fitbit app is up-to-date. For more information, see How do I use the Fitbit app?
  • Your iPhone or iPad is connected to cellular data or Wi-Fi.
  • The Bluetooth setting on your iPhone or iPad is turned on. To check, tap Settings User-added image > Bluetooth User-added image.
  • Your iPhone or iPad isn't managing other Bluetooth connections. If you have multiple Bluetooth products like speakers or headsets paired to your phone along with your Fitbit device, you may have trouble using more than one at the same time. Turn off other Bluetooth connections when not in use.
  • If you use more than one phone or tablet to sync, make sure the other device isn't nearby. If the device is nearby, turn off Bluetooth on it.
  • Your Fitbit device is charged

Troubleshooting steps

  1. Force quit the Fitbit app. For instructions see the Apple help article.
  2. On your phone, go to Settings User-added image > Bluetooth User-added image and turn Bluetooth off and back on.
  3. Open the Fitbit app.
  4. If your Fitbit device doesn't sync, restart it. For more information, see How do I restart my Fitbit device?
  5. Open the Fitbit app.
  6. If your Fitbit device doesn't sync, restart your iPhone or iPad. For instructions see the Apple help article.
  7. Open the Fitbit app.
  8. If your Fitbit device doesn’t sync, log in to your Fitbit account on a different phone or tablet and try to sync.
  9. If your Fitbit device still doesn’t sync, remove all other Fitbit devices from your account and from the list of connected Bluetooth devices on your iPhone or iPad and try to sync.

Android Phone

Requirements

  • Your phone is running the latest version of Android OS. To check, tap Settings > About Phone or About Device > Android Version.
  • Your Fitbit device is up-to-date. For more information, see How do I update my Fitbit device?
  • The Fitbit app is up-to-date. For more information, see How do I use the Fitbit app?
  • Your phone is connected to cellular data or Wi-Fi.
  • The Fitbit app is allowed to run in the background on your phone. For more information, see What should I know about using the Fitbit app on my Android phone?
  • The Bluetooth setting on your phone is turned on. To check, tap Settings > Bluetooth.
  • You have location services turned on, and the Fitbit app has permission to access your location. For more information see, Why is the Fitbit app prompting me to turn on location services?
  • If you use more than phone or tablet device to sync, make sure the other device isn't nearby. If the device is nearby, turn off Bluetooth on it.
  • Your phone isn't managing other Bluetooth connections. If you have multiple Bluetooth products like speakers or headsets paired to your phone along with your Fitbit device, you may have trouble using more than one at the same time. Turn off other Bluetooth connections when not in use.
  • Your phone doesn't have a syncing issue listed in What should I know about using the Fitbit app on my Android phone?
  • Your Fitbit device is charged.

Troubleshooting steps

  1. Force quit the Fitbit app, then reopen it.
  2. On your phone, go to Settings > Bluetooth and turn Bluetooth off and back on.
  3. If your Fitbit device doesn't sync, restart it. For instructions see How do I restart my Fitbit device?
  4. Open the Fitbit app.
  5. If your Fitbit device doesn't sync, restart your Android phone.
  6. Open the Fitbit app.
  7. If your Fitbit device doesn't sync, uninstall and reinstall the Fitbit app.
  8. Open the Fitbit app. 
  9. If your device doesn't sync, log in to your Fitbit account on a different phone, tablet, or computer and try to sync. 
  10. If your Fitbit device still doesn’t sync, remove all other Fitbit devices from your account and from the list of connected Bluetooth devices on your phone and try to sync.

Windows 10 phone or tablet

Requirements 

  • Your phone is running the latest version of Windows 10. To check, go to Settings > System > Phone update.
  • Your Fitbit device is up-to-date. For more information, see How do I update my Fitbit device?
  • The Fitbit app is up-to-date. For more information, see How do I use the Fitbit app?
  • Your phone is connected to cellular data or Wi-Fi.
  • The Bluetooth setting on your phone is turned on. To check, go to Settings > Devices > Bluetooth.
  • If you use more than one phone or tablet to sync, make sure the other device isn't nearby. If the device is nearby, turn off Bluetooth on it.
  • Your phone or tablet isn't managing other Bluetooth connections. If you have multiple Bluetooth products like speakers or headsets paired to your phone along with your Fitbit device, you may have trouble using more than one at the same time. Turn off other Bluetooth connections when not in use.
  • Your Fitbit device is charged.

Troubleshooting steps

Remove all other Fitbit devices from your account and try to sync. If your device still doesn't sync, contact Customer Support.

Windows 10 Computer

Requirements

  • Your computer is running the latest version of Windows 10. 
  • Your Fitbit device is up-to-date. For more information, see How do I update my Fitbit device?
  • The Fitbit app is up-to-date. For more information, see How do I use the Fitbit app?
  • Fitbit Connect isn't installed. To check, look for an icon with the Fitbit logo User-added image near the date and time on your screen. If you see this icon, uninstall Fitbit Connect using the same process you use to uninstall other programs.
  • The Bluetooth setting on your computer is turned on. To check, go to Start > Settings > Bluetooth. If you can't find this setting and don't know whether your computer supports Bluetooth, this blog explains how to check for Bluetooth compatibility. Note: If your computer doesn't support Bluetooth, purchase a wireless sync dongle from the Fitbit Store.

Troubleshooting steps

  1. From the Start menu, go to Settings > Bluetooth. Make sure you see your device on the list with the word “Connected” below.
  2. If your device isn't connected:
    1. Tap or click the device name and choose Remove Device.
    2. Make sure your device is nearby and wait for it to reappear in the devices list.
    3. When it does, tap or click the device again and choose Pair. The pairing process can take several minutes but when it's done the Bluetooth status should change to “Connected.”
  3. If your device is connected but won't sync, it's possible your computer's Bluetooth signal is weak or temporarily compromised. Try using the wireless sync dongle, available from the Fitbit Store.
  4. If your Fitbit device won't sync, log in to your Fitbit account on a different phone, tablet, or computer and try to sync.
  5. If your Fitbit device still doesn’t sync, remove all other Fitbit devices from your account and from the list of connected Bluetooth devices on your computer and try to sync.

Mac or Windows 8.1 Computer

Requirements

  • Fitbit Connect is installed. To check, look for an icon with the Fitbit logo User-added image near the date and time on your screen. If you can't find it, try the set up instructions again in How do I set up my Fitbit device?
  • Your device is connected to your Fitbit account. To check, log into your account on fitbit.com and click the gear icon User-added image in the top right. You should see the name of your Fitbit device at the top. If you don't see your device listed, set up your device again. Click the Fitbit Connect icon User-added image  Open Main Menu > Set Up a New Device and follow the onscreen instructions.
  • If you're using a Mac and want to sync over Bluetooth, make sure Bluetooth is turned on. To check, go to System Preferences > Bluetooth > Turn Bluetooth On. If your computer doesn't support Bluetooth, you can purchase a wireless sync dongle from the Fitbit Store.
  • If you use more than phone, tablet, or computer to sync, make sure the other device isn't nearby. If the device is nearby, turn off Bluetooth on it.

Troubleshooting steps

Note that your fitbit.com dashboard shows the time of your last successful syncclick the gear icon in the top right.

  1. Prompt Fitbit Connect to sync with your device:
    1. Click the Fitbit Connect icon and click Open Main Menu.
    2. With your charged Fitbit device nearby, click Sync Now.
    3. You may be asked to sign in to your Fitbit account, after which your device should sync. If you see a message saying your device can't be found, wake it up by pressing its button (most devices) or tapping it (Flex and Zip).
  2. (Mac only) If your computer has Bluetooth:
    1. Turn Bluetooth off and back on under System Preferences > Bluetooth. If syncing still doesn't work, your Bluetooth signal may be weak or temporarily compromised.
    2. Try using the wireless sync dongle, available from the Fitbit Store.
  3. Restart your device using the instructions in How do I restart my Fitbit device?
  4. If your device won't sync after the restart, next try uninstalling and reinstalling Fitbit Connect. For instructions see About the Fitbit app.
  5. If your Fitbit device still doesn’t sync, remove all other Fitbit devices from your account and try to sync.
If you can't sync to a compatible phone or tablet instead or your Fitbit device didn't come with a wireless sync dongle, contact Customer Support.
 

Aria Air

Requirements

  • You have the Fitbit app open and on the Today tab User-added image  on your nearby phone or tablet while you complete a weigh-in.
  • The latest version of the Fitbit app is installed on your phone or tablet. 
  • The Bluetooth setting on your phone or tablet is on. To check, tap Settings > Bluetooth.
  • Your phone or tablet isn't managing other Bluetooth connections. If you have multiple Bluetooth products like speakers or headsets paired to your phone along with your Fitbit scale, you may have trouble using more than one at the same time. Turn off other Bluetooth connections when not in use.
  • If you use more than one device to sync, make sure the other device isn't nearby. If the device is nearby, turn off Bluetooth on it.
  • Your Fitbit scale's battery isn't critically low.

Troubleshooting steps

  1. Force quit and then reopen the Fitbit app.
  2. Go to Settings > Bluetooth and turn Bluetooth off and back on.
  3. Turn your phone or tablet off and back on.
  4. Uninstall and reinstall the Fitbit app.
  5. If your Fitbit scale won't sync after you reinstall the app, log in to your Fitbit account on a different phone or tablet and try to sync. 
  6. If your Fitbit scale still doesn’t sync, remove all other Fitbit devices from your account and from the list of connected Bluetooth devices on your phone and try to sync.

Aria & Aria 2

After weighing in on Fitbit Aria or Fitbit Aria 2, the scale should display a progress bar, followed by a check mark, which indicates the new measurement synced successfully.

If the scale doesn't sync, you may see one of the following error messages on the scale’s screen:
  • NO SYNC
  • WIFI Symbol with an “X”
  • WRONG PASSWORD
  • CONNECTION ERROR
  • CAN'T CONNECT
  • NO WIFI
  • WEAK SIGNAL
  • No error message, but the measurement doesn't sync to your Fitbit account

If any of these conditions occur, try weighing yourself again. If the scale successfully syncs, it may have been a temporary issue that doesn't require further troubleshooting. If the problem persists, try the following tips:

  • Check that your router is on and working. If other devices are also unable to connect to your Wi-Fi network, restart your router.
  • Remove the batteries from your scale for 10 seconds, then reinsert them to restart your scale.
  • If you've made any changes to your network, such as a new router, network name, or password, see How do I reconnect my scale to my wireless network?
  • Your scale may be too far away from your router. Several walls, floors, or objects between the scale and router can cause interference. Try moving the scale closer to your router.
  • The network may have too much traffic or there are too many other Wi-Fi networks nearby. Don't use public Wi-Fi to sync your scale.
If you still can't sync, contact Customer Support. For additional information on error messages, see What does the error message on my scale mean?
上次更新日期: May 22, 2020
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