Fitbit Pairing Problems: 6 Common Issues (Explained)

TFitbit trackers are popular companions for fitness enthusiasts, offering a wealth of data and insights to track progress from your wrist.

Ensuring a seamless pairing between your Fitbit device and your iPhone or Android is crucial for a smooth experience. 

If you find yourself perplexed by the question, “Why won’t my Fitbit pair with my smartphone,” this article is for you! Strap in, lets get into it.

Closeup view of new Fitbit Sense smartwatch, isolated on yellow background

Bluetooth Connectivity Woes

Fitbit watches are popular wearable devices that offer various features to help you track your fitness and health goals. What makes them especially attractive is their ability to connect to your smartphone, for example, via Bluetooth. 

So it is incredibly frustrating when this key feature doesn’t work as it’s meant to. 

If you’re experiencing problems with your Fitbit watch’s Bluetooth connection, here are a few potential causes and solutions to consider:

Incompatible Devices

Some Fitbit models have specific requirements for Bluetooth compatibility.

It’s essential to ensure that your device supports Bluetooth 4.0 or higher.

If you’re uncertain about your device’s Bluetooth version, you can usually find this information in the device’s settings or user manual. 

Using a device with an incompatible Bluetooth version may result in connectivity problems with your Fitbit watch.

Distance and Interference

For a reliable Bluetooth connection between your Fitbit device and the paired smartphone or tablet, proximity is crucial. 

Make sure both devices are within a close range of each other, ideally within a few meters. Additionally, ensure that there are no obstructions or interference from other electronic devices nearby. 

Objects like walls or large metal structures can weaken the Bluetooth signal, leading to connectivity issues.

Bluetooth Settings

Before troubleshooting further, verify that Bluetooth is actually enabled on your smartphone or tablet.

In some cases, users inadvertently disable Bluetooth or set their devices to “Airplane” or “Battery Saving” mode, which can disable certain wireless functions. 

Make sure Bluetooth is enabled in the settings and that your device is discoverable, allowing it to establish a connection with your Fitbit watch.

If you’ve checked these settings and are still experiencing Bluetooth connection problems, you can try restarting the Bluetooth connection on both devices. 

Sometimes, a simple restart can resolve temporary glitches or conflicts that may interrupt the connection.

Outdated Fitbit App

Issues with app compatibility and pairing can halt the functionality of your Fitbit device, leading to frustration and inconvenience.

To begin with, it’s essential to have the latest version of the Fitbit app installed on your smartphone or computer.

Fitbit frequently updates its app to enhance performance, introduce new features, and ensure compatibility with the latest Fitbit devices. 

Outdated versions of the app may encounter compatibility issues with newer Fitbit devices, resulting in improper functionality and limited features.

By keeping your Fitbit app up to date, you can mitigate potential compatibility conflicts and enjoy seamless synchronization with your Fitbit watch.

Here’s how to update the Fitbit app on iOS and Android:

Updating on a Smartphone (iOS or Android):

  1. Open the App Store (iOS) or Google Play Store (Android) on your smartphone.
  2. Tap the ‘Updates’ tab at the bottom of the screen (iOS) or the menu icon (three horizontal lines) and select ‘My apps & games’ (Android).
  3. Scroll through the list of apps to find Fitbit. You’ll see the option to update next to the Fitbit app if an update is available.
  4. Tap the ‘Update’ button next to the Fitbit app to initiate the update process.
  5. Wait for the app to download and install the latest version. This may take a few moments, depending on your internet connection speed.
  6. Once the update is complete, you can open the Fitbit app and start using it with the updated features and improvements.

Related: Fitbit Update Problems? 7 Common Issues (Explained)

Another factor that can hinder the pairing process between your Fitbit watch and the app is the lack of necessary permissions.

The Fitbit app relies on various device features, such as Bluetooth, to establish a connection with your Fitbit watch. 

Therefore, it’s essential to grant the Fitbit app the required permissions to access these features on your device. 

Here are the steps to give the Fitbit app the necessary permissions on iOS and Android:

Granting Permissions on iOS:

  1. Open the ‘Settings’ app on your iPhone.
  2. Scroll down and find ‘Fitbit’ in the list of installed apps and tap on it.
  3. You will see a list of permissions that the Fitbit app can access.
  4. Make sure the toggles next to the required permissions, such as ‘Bluetooth,’Notifications,’ and ‘Motion & Fitness,’ are enabled (green).
  5. If any permission toggle is disabled, tap on it to enable it. You may need to confirm the action with your device passcode or Touch ID/Face ID.

Granting Permissions on Android (may vary slightly depending on device and OS version):

  1. Open the ‘Settings’ app on your Android device.
  2. Scroll down and find ‘Apps’ or ‘Applications’ and tap on it.
  3. Locate and tap on ‘Fitbit’ in the list of installed apps.
  4. On the Fitbit app info screen, tap on ‘Permissions’ or a similar option.
  5. You will see a list of permissions that the Fitbit app can access.
  6. Ensure that the toggles next to relevant permissions, such as ‘Location,’ ‘Bluetooth,’ and ‘Storage,’ are enabled.
  7. If any permission toggle is disabled, tap on it to enable it.
  8. Exit the settings menu and launch the Fitbit app. It should now have the necessary permissions to effectively communicate with your Fitbit watch.

Incompatible Smartphone or Computer

Achieving a seamless pairing between your Fitbit tracker and your smartphone or computer can sometimes be hindered by compatibility issues. 

To avoid these potential roadblocks, it’s essential to understand the specific system requirements of Fitbit trackers and ensure that your device meets them.

If you experience pairing issues with your Fitbit watch, the first factor to consider is the compatibility of your smartphone or computer’s operating system with the Fitbit tracker you’re using

Fitbit provides compatibility information on its website, so you can easily find out whether your device can successfully sync with the tracker before making a purchase.

If you find that your device’s operating system is incompatible with your Fitbit tracker, there are a few options to consider. 

Firstly, upgrading your smartphone or computer to a compatible operating system will likely resolve the compatibility issues and allow for seamless pairing. 

However, upgrading might not be feasible for everyone, particularly if it involves significant costs or device limitations.

In such situations, it is advisable to reach out to Fitbit support for further assistance. 

Fitbit’s customer support team is well-equipped to guide you through the troubleshooting process, offering solutions tailored to your specific compatibility issues. 

Battery Drain: Powering Up for a Stable Connection

Smartwatches need a strong battery to perform optimally. So it’s problematic when the battery is so low that your Fitbit can’t pair to your smartphone.

When the battery levels are low, it becomes difficult to establish a reliable connection between two devices.

To address the battery drain concern, it is recommended to connect your Fitbit tracker to its charging cable and allow it to charge for at least 30 minutes. 

This charging duration provides an ample amount of power to your tracker, increasing the chances of a successful pairing attempt. 

By diligently following this practice, you can eliminate the potential pairing issues arising from low battery levels.

Regularly charging your Fitbit tracker is a proactive approach that can significantly reduce the occurrence of pairing problems.

Syncing Snags

One of the common issues users may encounter when using Fitbit watches is syncing errors, which can occur when data fails to transfer between the Fitbit tracker and the paired device. 

The first step in troubleshooting syncing errors is to ensure that your Fitbit tracker is within the Bluetooth range of the paired device. 

Bluetooth has a limited range, typically around 30 feet, so ensure that your Fitbit and the device you are syncing with are within close proximity. 

Another thing to consider is the presence of multiple Bluetooth connections. 

If your Fitbit tracker is simultaneously connected to multiple Bluetooth devices, it can lead to conflicts and stop proper syncing. 

Therefore, I recommended disconnecting your Fitbit from any other Bluetooth devices before attempting to sync with your preferred device.

You can check the Bluetooth settings on your device and ensure that the connection is stable. 

If necessary, you can try restarting both the Fitbit tracker and the paired device to refresh the Bluetooth connection and resolve any temporary issues.

Firmware Frustrations

One persistent frustration often plagues users: software updates. 

Staying up-to-date with the latest firmware version is crucial for an optimal user experience. Out of date firmware can result in your Fitbit being unable to pair with your smartphone or tablet. 

Here are the steps to updating the Fitbit firmware:

  1. Before starting the firmware update process, ensure that your Fitbit device is connected to a stable Wi-Fi network or that your smartphone has a strong and reliable internet connection. 
  2. Launch the Fitbit app on your smartphone.
  3. In the Fitbit app, tap on the profile icon or your account picture in the top-left corner of the screen.
  4. From the device dashboard, locate and tap on your Fitbit device.
  5. Scroll down the device settings screen until you find the ‘Update’ option.
  6. Tap on the appropriate button to begin the update process.

Pros and Cons of Fitbit Pairing


  • Enhanced and regular data syncing
  • Extended Functionality between your Fitbit and other devices
  • On-the-go use of your Fitbit without having to have your phone out and on all the time


The following issues can cause snags when trying to pair your Fitbit with your preferred device:

  • Bluetooth Connectivity Issues
  • Outdated Fitbit App
  • Incompatible Smartphone or Computer
  • Battery Drain:
  • Syncing Issues
  • Outdated Firmware


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