Fitbit Versa 4 Won’t Sync: 8 Fixes That Work (2026)

Your Fitbit Versa 4 shows an old “last synced” time and your steps, sleep and workouts are not reaching your phone.

This is usually a Bluetooth, permission or pairing problem, and it is fixable without losing data.

Work through the eight fixes below in order, which takes about 15 minutes.

The Fitbit app is now called the Google Health app. Google’s help pages say the rename began May 19, 2026, and the steps below use the new name.

Quick answer: what to try first

Symptom	Likely cause	Try this	Time
Old “last synced” time	Background sync stalled	Manual sync from the app	1 minute
Never connects	Bluetooth or permissions off	Toggle Bluetooth, grant permissions	3 minutes
Syncs only after a restart	Software hang	Hold the button 10 seconds	1 minute
Syncs to the wrong phone	Second device connected	Remove other connections	5 minutes
Still fails	Broken pairing	Disconnect and add the watch again	10 minutes

Why does the Versa 4 stop syncing?

The watch syncs over Bluetooth in the background and also when you open the app with the watch nearby.

Anything that interrupts that link stalls the sync:

• Bluetooth or Airplane Mode: the phone is not listening.
• Missing permissions: Android needs Location and Nearby devices.
• Battery saver or Bedtime mode: both limit background data.
• Old software: the phone, app or watch is out of date.
• Another phone or tablet: a second device grabs the connection.

Fix 1: Force a manual sync

1. Keep the watch next to your phone.
2. Open the Google Health app.
3. Tap Connections at the top left, then tap Sync.

You can also go to the Today tab, press and hold the screen, and pull down.

Under Connections, select your watch to see its “last synced” time.

Fix 2: Reset Bluetooth and check Airplane Mode

1. Turn off Airplane Mode.
2. Open your phone’s Bluetooth settings.
3. Turn Bluetooth off for 3 seconds, then back on.
4. Make sure the phone has Wi-Fi or mobile data.

Fix 3: Grant the app its permissions

On Android, open Settings, then Apps, then Google Health, then Permissions.

Turn on Location and Nearby devices (Android 12 and up).

On iPhone, check the app’s entry in Settings and keep Background App Refresh on.

Fix 4: Turn off battery saver and Bedtime mode

Google says both modes restrict background data, so the watch stops syncing on its own.

Turn them off, then put the watch on its charger and try a sync once charging starts.

Fix 5: Restart the watch and the phone

1. Press and hold the Versa 4 button for 10 seconds.
2. Release when the Fitbit logo appears.
3. Restart your phone.
4. Try a sync after each restart.

A restart does not erase your activity data. See our guide to restarting and resetting the Versa 4.

Fix 6: Update the phone, app and watch

Google’s setup page lists Android 14 or higher and iOS 16.4 or higher for the app, so older phones may struggle.

• Phone: on Android, go to Settings, System, System update.
• App: update Google Health in Google Play or the App Store.
• Watch: install any pending update, as in our Versa 4 update guide.

Google also flags the Huawei P8 Lite, P9 Lite, P20 Lite and Xiaomi Mi 6 as problem phones.

Fix 7: Which other devices are connected?

A second phone or tablet signed into your account can take over the connection.

1. Uninstall Google Health on other nearby devices, or turn off their Bluetooth.
2. In the app, open Connections and choose Disconnect device for any other listed watch.
3. In your phone’s Bluetooth list, forget any other Fitbit devices.

Fix 8: Disconnect the watch and add it again

This is the last step, and Google’s steps run in this order.

1. In the app, go to Connections, select your Versa 4 and tap Disconnect device.
2. In your phone’s Bluetooth settings, forget the Versa 4.
3. Back in the app, go to Connections and tap Add device.
4. Follow the prompts.

If it still fails, uninstall Google Health, reinstall it and try again.

Avoid a factory reset unless nothing else works, because Google warns it erases unsynced data.

How often should the Versa 4 sync by itself?

Google says Fitbit watches sync automatically through the day and every time you open the Google Health app with the watch nearby.

A Fitbit community moderator explained that the option to turn all-day sync off was removed, so it is always on.

• Bluetooth: keep it on, with the phone near the watch.
• Background access: let the app run in the background and keep Location on, as a community product expert advised.
• Nightly syncing: not required if the setup is correct.

Where are the Android settings for each fix?

Task	Android path
Manual sync	Google Health, Connections, Sync
App permissions	Settings, Apps, Google Health, Permissions
Bluetooth reset	Settings, Connected devices or Connections, Bluetooth
Phone update	Settings, System, System update
Remove other watches	Google Health, Connections, Disconnect device
Add the watch again	Google Health, Connections, Add device

What does Error Code 2 mean?

Google’s sync page lists the message “Something went wrong. Try again (Error Code 2)” for Fitbit watches and trackers.

The page gives no separate cause for it, so use the same sequence of connection checks, restarts, updates and re-pairing.

What is the cleanest re-pairing order?

A Fitbit community moderator posted this sequence for a Versa 4 that kept failing to sync.

1. Unpair the Versa 4 in your phone’s Bluetooth settings and in the app.
2. Unpair your other Bluetooth devices from the phone.
3. Force quit the app, then turn the phone off for 1 to 2 minutes and turn it back on.
4. Put the watch on its charger, open the app and set up the Versa 4.
5. If it will not connect, restart the watch, then set up notifications again.
6. Reconnect your other Bluetooth devices only after the Versa 4 is paired and syncing.

The moderator stressed pairing the Versa 4 first, before any other Bluetooth device.

What if it only syncs after a restart?

Some Versa 4 owners in the Fitbit community report the watch syncing only after a restart.

That pattern has no official fix, and one user in the moderator’s thread said the steps above did not cure it.

If it keeps happening after a clean re-pair, contact Fitbit support and describe it.

Did you just move your account to Google?

Google’s sync page says large historical data transfers after a recent account migration can take up to 48 hours.

Wait that long before assuming sync is broken.

What if the watch itself is faulty?

Fitbit’s limited warranty covers defects in materials and workmanship for one year on a new product, or two years if bought in the EEA.

Request a return authorization from Fitbit Customer Support first, and back up your data before shipping.

See the Fitbit limited warranty for exclusions.

What if the Versa 4 still will not sync?

Check the red X case in our unresponsive screen guide.

Otherwise contact Fitbit support with the steps you tried.

Official references: Google’s sync help page, the restart instructions and the setup requirements.