How to Fix Fitbit Charge 4 Bluetooth Sync Problems From 2020
Your Fitbit Charge 4 from 2020 won’t sync with your phone over Bluetooth, leaving your workout data stuck. This is often due to connection drops or app errors.
Why Won’t Your Fitbit Charge 4 Sync Over Bluetooth?
If your Fitbit Charge 4 from 2020 isn’t syncing via Bluetooth, the issue could be interference, an outdated app, or a device glitch. Reliable syncing is key to tracking progress, so here’s how to fix Bluetooth problems and restore connectivity.
Tools You’ll Need
- Smartphone with Fitbit app
- Fitbit Charge 4 charger
- Second device (optional for testing)
- Internet connection
Step 1: Restart Both Devices
A fresh start often works.
- Restart your Charge 4 via Settings > Restart.
- Turn off Bluetooth on your phone, wait 10 seconds, then turn it back on.
- Try syncing again in the app.
Step 2: Update the Fitbit App
Old apps cause sync fails.
- Uninstall the Fitbit app from your phone.
- Reinstall the latest version from the App Store or Google Play.
- Log in and attempt a sync.
Step 3: Reduce Interference
Other devices can disrupt.
- Move away from WiFi routers, microwaves, or other Bluetooth gadgets.
- Keep the Charge 4 within 10 feet of your phone during sync.
- Test in a clear area.
Step 4: Re-Pair the Device
Reset the connection.
- In the app, go to Account > Charge 4 > Remove This Device.
- Re-add it by selecting Set Up a Device and following prompts.
- Ensure Bluetooth is enabled on your phone.
Step 5: Factory Reset (Last Resort)
Clear all issues.
- On the Charge 4, go to Settings > About > Factory Reset.
- Set it up again in the app—note that unsynced data will be lost.
- Sync and monitor for stability.
Your Fitbit Charge 4 should sync smoothly now. For step tracking issues, see this guide. For battery drain, check this fix.