If you can't get started with your Fitbit device, usually a missing requirement is the cause. Carefully review the requirements below and move on to the troubleshooting steps if needed.

Note: For more information about setting up Fitbit Ace or Fitbit Ace 2, see How do I set up Fitbit Ace devices? 

You can’t set up Fitbit Versa 2 or Fitbit Aria Air on a Windows 10 device. Use a compatible iPhone, iPad, or Android phone.

Requirements

Choose a section to find the requirements specific to that device or computer.

• Phone or tablet
  If you're using the Fitbit app for iPhones and iPads, Android phones, or Windows 10 devices:

  • You followed the instructions for your device in How do I set up my Fitbit device? Note that you can't set up your Fitbit device from your phone or tablet's Bluetooth screen; you must open the Fitbit app and follow the on-screen instructions.
  • The software on your phone or tablet is up to date. To see if an update is waiting to be installed:
    • iPhones & iPads—Tap Settings > General > Software Update.
    • Android phones—Tap Settings > About Phone or About Device > Android Version.
    • Windows 10 devices—Tap or click Start > Settings > Update & security.
  • The Bluetooth setting on your phone or tablet is on. To find it:
    • Phones & iPads—Tap Settings > Bluetooth.
    • Android phones—Tap Settings > Connections > Bluetooth.
    • Windows 10 devices—Click or tap Settings > Devices > Bluetooth.
  • (Android phones only) Double-check the following information about your phone or tablet:
    • Your device is supported by the Fitbit app. For the latest list, go to http://www.fitbit.com/devices.
    • Your device doesn't have a set up or sync issue listed on What should I know about using the Fitbit app on my Android device?
    • Power Saving Mode is turned off on your device. This mode frequently causes the device to disable 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?
• Windows 10 Computers
  • You installed the Fitbit app for Windows as described in How do I set up my Fitbit device?
  • The operating system on your computer is up to date. To see if an update is waiting to be installed, go to Start > Settings > Update & security.
  • The Bluetooth setting at Start > Settings > Bluetooth is on. If you can't find the setting and you're not sure whether your computer supports Bluetooth, follow the steps in this blog post to verify Bluetooth capability. 
• Macs or Windows 8.1 Computers
  • You followed the Mac or Windows 8.1 instructions in How do I set up my Fitbit device?
  • You see an icon with the Fitbit logo located near the date and time on your computer. This means the software required for setup is installed.
  • Your device is charged as described in How do I charge my Fitbit device?
  • (Mac only) If your computer has Bluetooth, go to your System Preferences and verify that it is turned on. Note that even when Bluetooth is on, the signal can occasionally be weak or problematic. When this happens, plug the wireless sync dongle into a USB port on your computer as shown. If your Mac doesn't have Bluetooth the dongle is required.
    
  • (Windows only) The wireless sync dongle is plugged into a USB port on the computer. If your device didn't come with a dongle and you can't use a phone or tablet instead, contact Customer Support.
  • If the dongle is plugged in, your computer is able to recognize it. To check, on your computer find and click the icon with a Fitbit logo. It is located near the date and time. If you see "USB Dongle Disconnected," try a different USB port.

Troubleshooting

If you're still unable to set up, try the troubleshooting steps below for your device or computer.

• Phone or tablet
  1. Turn off Bluetooth on your phone; wait 10 seconds, and then turn it back on.
  2. Try setting up your device again.
  3. Turn your Fitbit device off and back on using the instructions in How do I restart my Fitbit device?
  4. Try setting up your device again. If you have trouble connecting your watch to Wi-Fi, see Why won't my Fitbit watch connect to Wi-Fi?
  5. If you can't set up after a restart, reboot your phone or tablet (turn it off and then back on).
  6. Try setting up your device again.
  7. If you can't set up after the reboot, remove all other Fitbit devices from your account and from the list of connected Bluetooth devices on your phone or tablet.
  8. Try setting up your device again.
  9. If you can't set up after removing all other Fitbit devices, try uninstalling and reinstalling the Fitbit app.
  10. If you still can't set up, please contact Customer Support so we can investigate.
• Windows 10 Computers
  1. Turn your Fitbit device off and back on using the instructions in How do I restart my Fitbit device?
  2. Try setting up your device again.
  3. If you can't set up after the reboot, remove all other Fitbit devices from your account and from the list of connected Bluetooth devices on your computer.
  4. If you still can't set up and a compatible phone or tablet isn't available, please contact Customer Support so we can investigate.
• Macs or Windows 8.1 Computers
  1. Turn your Fitbit device off and back on using the instructions in How do I restart my Fitbit device?
  2. Try the setup process again:
     1. Click the icon with the Fitbit logo (located near the date and time on your computer).
     2. Click Open Main Menu.
     3. Click Set Up a New Fitbit Device.
     4. If the setup process failed last time after you created a Fitbit account, click Existing User. Otherwise click New Fitbit User.
     5. Follow the on-screen instructions.
  3. If you can't set up after the reboot, remove all other Fitbit devices from your account.
  4. Try setting up your device again.
  5. If you still can't set up and a compatible phone or tablet isn't available, please contact Customer Support so we can investigate.