The basic steps to pair your Fitbit
To connect your Fitbit to your phone, you need the official Fitbit app, a Bluetooth connection, and about five minutes. The process is the same whether you have an iPhone or Android phone, though the exact menu names differ slightly. Your Fitbit will search for your phone, your phone will search for your Fitbit, and once they find each other, they stay paired unless you deliberately unpair them.
Start by downloading the Fitbit app from the Apple App Store (if you have an iPhone) or Google Play Store (if you have an Android phone). Open the app and create a Fitbit account or sign in if you already have one. Then turn on your Fitbit's Bluetooth by going into its settings menu — the exact path depends on your model, but it's usually Settings > Bluetooth > On. Make sure your phone's Bluetooth is also on.
Open the Fitbit app and tap the plus sign or "Set up device" button. Select your Fitbit model from the list. The app will search for your device. When your Fitbit appears on the list, tap it. Your phone and Fitbit will exchange information for a few seconds, and then the app will show a confirmation screen. That's the pairing complete.
Key Takeaways
- read the official Fitbit app from your phone's app store and create or sign into your Fitbit account before you start.
- Turn on Bluetooth on both your Fitbit and your phone, then open the Fitbit app and select "Set up device" or the plus icon.
- Your phone will show a list of nearby Fitbit devices — tap yours to complete the pairing.
- Once paired, your Fitbit syncs data to the app automatically whenever both devices are in range and Bluetooth is on.
What to do if your Fitbit doesn't appear in the app
If you tap "Set up device" and your Fitbit doesn't show up in the list, the most common cause is that Bluetooth is off on one of the devices. Check your phone's Bluetooth setting — on iPhone, swipe down from the top right corner and tap the Bluetooth icon; on Android, swipe down twice from the top and look for Bluetooth. Then check your Fitbit's Bluetooth setting by going into its Settings menu.
If both are on and your Fitbit still doesn't appear, restart both devices. Turn off your Fitbit completely (the method varies by model — check your manual or the Fitbit website for your specific device). Restart your phone normally. Turn your Fitbit back on, make sure Bluetooth is on again, and try the pairing process once more. Most pairing problems resolve after a restart.
If your Fitbit still doesn't show up, try uninstalling and reinstalling the Fitbit app. This clears out any corrupted data the app may have stored. After you reinstall it, sign back into your account and try pairing again. If you've already paired this Fitbit to another phone or account, you may need to unpair it first — see the section below on unpairing.
Unpairing your Fitbit from your phone
You might need to unpair your Fitbit if you're switching to a new phone, giving it to someone else, or troubleshooting a connection problem. In the Fitbit app, tap your profile icon (usually in the bottom right corner). Find your device in the list and tap it. Look for a "Remove device" or "Unpair" button — the exact wording depends on your app version. Tap it and confirm.
Your Fitbit will no longer sync to that phone or account. The device itself is not erased — all your data stays on the Fitbit. You can pair it to a different phone or account anytime by following the basic pairing steps above. If you're giving the Fitbit to someone else, they can set up their own Fitbit account and pair it without any action from you.
Why your Fitbit stops syncing even though it's paired
Pairing and syncing are two different things. Your Fitbit stays paired to your phone permanently, but it only syncs — sends data like steps and heart rate to the app — when Bluetooth is on and both devices are in range. If your Fitbit hasn't synced in a few hours, check that Bluetooth is still on on both devices. Many phones turn Bluetooth off automatically when you restart them or when they run low on battery.
If Bluetooth is on and your Fitbit still won't sync, try opening the Fitbit app and pulling down on the screen to manually refresh. If that doesn't work, restart your Fitbit and your phone. Sync problems are almost always Bluetooth connection issues, not pairing issues — your Fitbit remembers the pairing even if it can't sync right now.
If your Fitbit syncs sometimes but not consistently, move closer to your phone when you open the app. Bluetooth has a range of about 30 feet in open space, but walls, metal, and other wireless devices can reduce that. If you're far from your phone when you open the app, it may not be able to connect. Once you're closer and it syncs, it will remember the data from the time you were apart and upload it all at once.
Pairing a second Fitbit to the same phone
You can pair multiple Fitbits to one phone and one Fitbit account. In the Fitbit app, tap your profile icon and then tap "Add another device" or the plus sign. Follow the same pairing steps as before — make sure the new Fitbit's Bluetooth is on, select it from the list in the app, and wait for confirmation. The app will now show both devices in your profile.
Each Fitbit will sync its own data separately. You can see steps, heart rate, and other metrics for each device in the app. If you want to pair a Fitbit to a different account instead, you'll need to unpair it first, then sign out of the app, sign in with the other account, and pair it again.
Troubleshooting when pairing fails repeatedly
If you've restarted both devices, checked Bluetooth, and reinstalled the app but pairing still fails, try "forgetting" the device on your phone's Bluetooth settings. On iPhone, go to Settings > Bluetooth, find your Fitbit in the list, tap the info icon, and select "Forget This Device." On Android, go to Settings > Bluetooth, long-press your Fitbit, and tap "Unpair." Then try pairing again through the Fitbit app.
If that doesn't work, check whether your phone's Bluetooth is up to date. On iPhone, go to Settings > General > Software Update. On Android, go to Settings > About Phone > System Update. Install any available updates and try pairing again. Outdated Bluetooth software can sometimes prevent pairing with newer Fitbit models.
As a last resort, factory reset your Fitbit. The steps vary by model — check the Fitbit website or your device manual for instructions. A factory reset erases all data on the Fitbit itself, so only do this if you've already synced your data to the app. After the reset, pair it again as if it were new.
Frequently Asked Questions
Do I need to pair my Fitbit every time I use it?
No. Once you pair your Fitbit to your phone, they stay paired permanently. You only pair once. After that, your Fitbit syncs automatically whenever Bluetooth is on and both devices are in range. You don't have to do anything — just wear your Fitbit and open the app when you want to see your data.
Can I pair my Fitbit to multiple phones at the same time?
A Fitbit can be paired to only one phone at a time. If you want to switch it to a different phone, unpair it from the first phone using the Fitbit app, then pair it to the second phone. You can use the same Fitbit account on both phones — just pair the device to whichever phone you're carrying that day.
What if I lost my phone and got a new one?
read the Fitbit app on your new phone and sign into the same Fitbit account you used before. Your Fitbit will still be listed in your account. Tap "Set up device," select your Fitbit from the list, and pair it. All your historical data is stored in your account, so you won't lose anything.
Why does the Fitbit app ask for permission to access my location?
The app uses location to map your walks and runs if you enable that feature. You can deny location permission and the app will still work — you just won't see a map of where you exercised. The choice is yours, and you can change it anytime in your phone's Settings under Fitbit app permissions.
Does my Fitbit need to be charged to pair with my phone?
Your Fitbit needs enough battery to turn on and run Bluetooth, but it doesn't need to be fully charged. If your Fitbit is completely dead, charge it for at least 15 minutes before trying to pair. Once it's on and Bluetooth is enabled, you can pair it even if the battery is low.