If your Fitbit tracker won’t sync, start with the simplest check: keep it near your phone, open the Google Health app (formerly branded as the Fitbit app), and request a manual sync. Confirm that Bluetooth and internet access are both available, then work through phone-specific checks before restarting or re-pairing the tracker.
What needs to work for a Fitbit tracker to sync?
Fitbit trackers and watches send data to the Google Health app over Bluetooth Low Energy. The phone also needs Wi-Fi or cellular internet so the app can transfer that data to your account. Bluetooth being connected by itself does not guarantee that account sync will finish. Google says a nearby Fitbit normally syncs automatically when you open the app; when it does not, its Help Center identifies a connection issue as a likely problem. Google Health Help Center: How Fitbit devices sync data.
This guide is for Bluetooth-connected trackers and watches. Fitbit Aria Air also uses Bluetooth, but Aria and Aria 2 scales use Wi-Fi, so their connection troubleshooting is different.
Try a manual sync and check both connections
- Bring the tracker close to the phone. Open the Google Health app and pull down on the Today tab or the device connection screen until the sync progress indicator appears. Google also documents a Connections → Sync option.
- Check whether sync completed. Look at the device’s “last synced when” information and see whether it changes.
- Confirm both connections. Make sure Bluetooth is on and the phone can access the internet through Wi-Fi or cellular data.
- Refresh Bluetooth. Turn Bluetooth off, wait several seconds, then turn it back on and try syncing again.
Google’s instructions for manual syncing and connection checks are in its iPhone and iPad sync guide and Android sync guide.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Check for an old pairing or another nearby phone
A stale Bluetooth profile or a Fitbit paired to another phone can interfere with syncing. Google’s iPhone guidance says a device can sync with only one device at a time. If you have another nearby phone signed into the same account, follow Google’s platform-specific directions to remove the Google Health app and old pairing from that phone. Android guidance also advises removing competing pairings.
Use the instructions for your phone rather than deleting unrelated Bluetooth devices. The steps and settings differ between Android and iPhone or iPad.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Check app, permissions, and background settings
For either platform
- Force quit the Google Health app, open it again, and check for an app update.
- Confirm the phone allows the app to use Bluetooth and operate in the background.
For Android
Google notes that background-data restrictions can prevent automatic syncing. Power-saving settings and location permissions may also matter during setup. Android menu names vary by OS version and phone manufacturer, so look for the relevant app, battery, data-use, and permission settings in your phone’s Settings app. Google’s overview is How to use the Google Health app on an Android phone.
Before reinstalling on iPhone or iPad
Reinstalling the app is a later troubleshooting step, not the first one to try. Before deleting it, check that your version of iOS is still supported; an unsupported phone may not be able to reinstall the app. Google’s setup guidance covers app and device compatibility: Why you can’t set up a Fitbit device.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Restart the phone and tracker
Restart the phone and Fitbit separately, then open the app and try a manual sync again. Use the restart method for your exact Fitbit model: button combinations and cable-based procedures are not universal. Google says restarting a Fitbit does not delete fitness data.
Charging-cable restart for selected models
Google lists a cable-button restart method for Charge 5, Charge 6, Luxe, and Luxe Special Edition:
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
- Connect the tracker to its charging cable.
- Press the small button on the flat end of the cable three times, leaving exactly one second between presses.
- Wait roughly ten seconds for the Fitbit logo.
These instructions apply to the named models, not every Fitbit. See Google’s charging and device guidance for the cited method.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Remove and add the Fitbit again if simpler checks fail
Re-pairing can clear a stale connection, but do it through the Google Health app’s setup flow—not by starting setup from the phone’s Bluetooth screen.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
- Remove the Fitbit from the Google Health app.
- In the phone’s Bluetooth settings, forget or unpair the Fitbit.
- Return to the Google Health app and follow its add or setup instructions to reconnect the device.
If setup still fails, check Google’s Fitbit setup troubleshooting before considering a reinstall.
When to contact support
If the platform-specific troubleshooting, restarts, and app-based re-pairing do not restore syncing, contact Google/Fitbit Customer Support. A factory reset is not a general first-line fix for a sync problem, so do not reset the tracker simply because Bluetooth syncing failed.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
