How To Fix Fitbit One Not Syncing? [Troubleshooting Guide]

The Fitbit One is an excellent, low cost, wearable fitness-oriented computers. Sometimes, however, a Fitbits One will not sync. If a Fitbit one not syncing has been a problem for you, then you have come to the right place.

Most of the time, when a Fitbit One is not syncing its because the device is paired to multiple devices and there is a bit of Bluetooth confusion. Other common issues are a low battery or an outdated app or driver. 

In this article, we will go over all the reasons why a Fitbit one may not sync. We will also discuss all the options you may have in resolving this issue.

Fitbits work most of the time, but even still, most users will more than likely face a syncing issue at least once during their ownership of a Fitbit device. So, knowing how to manually transfer your Fitbit data is essential.

How to sync your Fitbit

Syncing your Fitbit is usually a straightforward process, which is why when it doesn’t work right, it can be a pretty confusing affair.

Once your Fitbit is up and running and paired with your phone, it will generally have a consistent Bluetooth connection to your host device and therefore should be ready to link up whenever you open the Fitbit app.

Manually sync your Fitbit One

To force your Fitbit fitness device to sync, all you have to do is swipe down from the Fitbit app’s home screen and release to start the process.

After that, you will see the turquoise line move from the left to the right just above the main tracking panel.

How to Turn on All-Day Sync on The Fitbit App

This is a feature that was previously in Fitbit’s app, but unfortunately, the All-Day sync option has been removed. The good news is, as long as your phone is in range of your Fitbit device and they are paired via Bluetooth, they should sync regularly throughout the day to make sure your data is up to date.

How to Sync Fitbit One With a Computer

You don’t have to have a smartphone to be able to sync your Fitbit data. A Windows or Mac desktop or laptop computer will do just fine. To sync your Fitbit One with your desktop or laptop, just follow these steps:

Step 1: Download Fitbit connect

Step 2: If you aren’t already, sign in with your Fitcount account credentials

Step 3: Connect your Fitbit Wireless Sync Dongle

Step 4: It should automatically sync, but you can press ‘Sync’ to do so manually

Step 5: Log into the Fitbit Dashboard by going to

Fitbit One Won’t Sync? Use These Steps to Troubleshoot

You should be able to just follow the instructions above, but if you have made it this far through the article, then you have more than likely come across some sort of issue and your Fitbit one won’t sync.

Fitbit Syncing Troubleshooting Checklist

1: Make sure that the Fitbit app is compatible with your device and that you are running the latest version of your device’s operating system and the Fitbit app

3: The device that you have connected has a Wi-Fi or cellular data connection

4: Make sure that your connected device has Bluetooth enabled

5: Ensure that your Fitbit One device’s battery is charged

6: Make sure that your Fitbit One device’s software is up to date

7: Reset the Fitbit app

8: Turn Bluetooth off and on again

9: Turn your Fitbit One off and then on again

10: Uninstall and then reinstall the Fitbit app

11: Then, try logging into your Fitbit account on a different device

12: Make sure to remove other Fitbit devices from the app and Bluetooth list if there are any there.

This list should serve as a starting point for troubleshooting. If you are, however, experiencing a consistent amount of issues with syncing your Fitbit One device, then it’s time to start with some more advanced troubleshooting.

You can learn how to factory reset your Fitbit with the guide in this article, but keep in mind, this will result in any unsynced data being lost.

How to Fix Fitbit One Not Syncing

If you own a Fitbit One, you might, every once in a while, run into issues where it won’t sync to an Android or iPhone device, or even your PC. When this happens, the app will tell you that the sync process isn’t able to complete. It could even say the Fitbit One is not found. 

There are several different reasons why this would happen. In this article, we will go over all those reasons. We will also go over the fixes that can be implemented to resolve this issue.

FYI: The solutions provided in this article can be used to fix sync problems with all Fitbit tracker models from Fitbit Charge 3 and Fitbit Ace 3 to Fitbit Ionic and Fitbit Versa, but here we will be focusing on the Fitbit One.

Cause of Fitbit One Sync Errors

Fitbit One sync errors are usually because the fitness tracker is becoming unpaired with the smartphone, tablet, PC, etc. that it was originally connected to. This can happen when you connect too many devices at once. This can confuse the Bluetooth pairing situation and cause things to not work properly.

Try to force a manual sync. The Fitbit app can, at times, need a little manual input to start a sync even after it’s been opened. To force a sync, do the following: 

Step 1: Tap the member card icon

Step 2: Tap the name of the Fitbit tracker

Step 3: Tap Sync Now

Make Sure to Check Your BlueTooth Settings

Also, make sure to check the device’s Bluetooth settings. The Fitbit One uses Bluetooth to sync data to smartphones, tablets, and computers. So, it won’t be able to connect if Bluetooth is disabled on the device.

FYI: Bluetooth can usually be easily turned on and off from quick menus on most devices. For example, on iPadOS, you can swipe down in the upper-right corner to open this menu. On Android and Windows Phone, you can swipe down from the top to open it.

Then, install the Fitbit app on your device. You more than likely already installed the Fitbit app on your smartphone, tablet, or PC when you set the device up. If you bought a used Fitbit One, on the other hand, then you may not already have the Fitbit app installed. Unlike most other devices, Fitbits require installing a proprietary app to connect to another device and sync data.

Update your Fitbit One. Your fitness device may have trouble connecting to the tracker if its software is outdated.

Make sure to only sync the Fitbit to one device. While it may seem like a good idea to pair your Fitbit One with your smartphone and desktop computer, this can actually cause a conflict for the tracker.

In some cases, it can cause your Fitbit One to connect to both at the same time. The best way to resolve this is to turn off Bluetooth one device while you are trying to sync to the other. Make sure to turn Bluetooth off on the second device entirely.

Disabling Wi-Fi May Fix Fitbit One Not Syncing

Disable Wi-Fi. Sometimes having a smartphone or tablet’s Wi-Fi and Bluetooth turned on at the same time can prevent each of these technologies from working properly. If you’re trying to sync a Fitbit One tracker, this can sometimes prevent the Bluetooth connectivity and prevent it from syncing.

Check the Fitbit One battery. While Fitbit One trackers do have a very long battery life, you need to remember to recharge these devices every day or so. If a tracker is not syncing, it may have run out of power and turned off without you noticing. This is likely to occur if you are using a Fitbit One or Fitbit Zip.

Restart your Fitbit One tracker. Restarting a Fitbit One is basically the same as restarting a PC. It can refresh the device’s operating system and internal memory. This will generally fix any issues you may experience, such as syncing problems.

Exactly how you reset a Fitbit varies from model-to-model. All of the different methods, however, generally involve plugging the tracker into a USB cable, connecting that cable to a power source, and holding the main button for about 15 seconds. Once you see the Fitbit logo flash on the screen, you know it worked. After that, the device restarts. Restarting a Fitbit One will not delete any data besides notifications.

FYI: You usually need to restart a Fitbit One tracker after encountering one of the problems mentioned above. Issues with Wi-Fi and Bluetooth conflicts or being connected to multiple devices can be resolved by resetting your Fitbit One.

Factory Reset your Fitbit One tracker. A Factory reset is a last resort, as it deletes all data and returns the Fitbit to its factory settings.

You can, however, restore any data synced to your online Fitbit account after the reset.

IMPORTANT: Don’t confuse a normal reset for a factory reset when talking to online or offline customer support. Restarting a Fitbit turns it off and on again while performing a factory reset deletes everything on it.


The Fitbit One is usually reliable but sometimes you may find yourself asking, ‘Why is my Fitbit One not syncing?’ We hope the tips in this article helped you get your Fitbit One working again. 

Usually, when a Fitbit One will not sync, its due to a misconfiguration of the Bluetooth connection. If you are lucky then it was just a dead battery or a problem with a driver. Another common reason that a a Fitbit One will not sync is due to an outdated app.