An iPhone pairs with Apple Watch and many Fitbit or Garmin models, but Pixel Watch and newer Galaxy Watch models do not support iOS.
Bluetooth alone does not make every smartwatch compatible with an iPhone. The deciding factor in how to connect an iPhone to a smartwatch is the watch platform: Apple Watch uses Apple’s Watch app, while supported third-party models pair through their own companion app.
Start by identifying the exact watch model, then use the matching method below. Pairing from the iPhone’s Bluetooth screen by itself is often the wrong starting point because Fitbit, Garmin, Samsung, and Apple all rely on companion software to finish setup, permissions, syncing, and account sign-in.
Which Smartwatches Work With An iPhone?
iPhone compatibility varies sharply by brand and generation. Apple Watch, current Fitbit devices, many Garmin watches, and select older Samsung watches can work with iPhone; Google Pixel Watch and newer Samsung Galaxy Watch models cannot.
Software requirements differ too, so a watch that supports iPhone may still reject an older iOS version. The table below lists the current minimums for the major watch families covered here.
Prepare The iPhone Before Pairing
The iPhone should be updated, connected to Wi-Fi or cellular data, and have Bluetooth turned on before setup begins. The watch should also have enough charge to stay powered through pairing and any software update that appears.
- On iPhone, open Settings > Bluetooth and turn Bluetooth on.
- Open Settings > General > Software Update and install any iOS update required by the watch.
- Keep the iPhone and watch close together during the first connection.
- If the watch was paired to another phone, remove or transfer that old pairing before starting again.
Connect An iPhone To Apple Watch: Current Pairing Steps
Apple Watch pairs through the Watch app and a pairing animation, not through the Bluetooth device list. Apple’s current process starts with the watch powered on and the iPhone showing its Home Screen nearby.
- Press and hold the Apple Watch side button until the Apple logo appears, then put the watch on your wrist.
- Open the iPhone Home Screen and hold the phone close to the watch. When Use your iPhone to set up this Apple Watch appears, tap Continue.
- If the prompt does not appear, open the Watch app, tap All Watches, then tap Add Watch.
- Tap Set Up for Myself. Hold the iPhone over the animation on the Apple Watch so the watch face sits inside the on-screen viewfinder.
- If the camera method fails, tap Pair Apple Watch Manually and follow the displayed prompts.
- Choose whether to set up the watch as new or restore a backup, then finish the Apple Account, passcode, wrist, and settings screens.
The Watch app reports that the Apple Watch is paired before setup continues into syncing and settings. Apple documents the same sequence in its current Apple Watch setup instructions.
Smartwatch Compatibility At A Glance
The compatibility split is easiest to see by watch family. Use the model name on the watch, box, or companion app before installing anything.
| Smartwatch Family | iPhone Support | Current Setup Requirement |
|---|---|---|
| Apple Watch Series 11, SE 3, Ultra 3 | Yes | iPhone 11 or later with iOS 26 or later |
| Older Apple Watch models | Yes, model-dependent | Required iPhone and iOS version varies by watch generation |
| Fitbit watches and trackers | Yes, supported models | Google Health app; iOS 16.4 or later |
| Garmin watches | Yes, supported models | Garmin Connect; iOS 18.2 or later |
| Galaxy Watch, Watch Active, Active2, Watch3, select Gear models | Yes, older models | Samsung Galaxy Watch app; features vary by model |
| Galaxy Watch4 through Watch8, Watch FE, Watch Ultra | No | Wear OS models require Android, not iOS |
| Google Pixel Watch 1 through 4 | No | Google states that iPhones are not supported |
Pair Fitbit, Garmin, Or Older Galaxy Watch Models
Fitbit, Garmin, and supported older Samsung watches should be paired from their companion apps. Starting in Settings > Bluetooth can leave the watch visible to iOS without completing account setup or data syncing.
Fitbit On iPhone
Current Fitbit setup runs through the Google Health app on iPhone. Google says the app requires iOS 16.4 or later and a Google Account.
- Charge the Fitbit device and install Google Health from the App Store.
- Open Google Health and sign in with your Google Account.
- Tap Connections in the top-left corner, then tap Add device.
- Select the Fitbit model and follow the on-screen pairing prompts. A completed connection appears under Devices with the last sync time and battery level.
Garmin On iPhone
Garmin watches pair through Garmin Connect, and Garmin’s current support page lists iOS 18.2 or later as the minimum iPhone requirement. Put the watch into pairing mode before asking the app to scan.
- Open Garmin Connect.
- Tap More at the bottom-right, then Garmin Devices > Add Device.
- Tap Find Nearby Accessories.
- Put the Garmin watch into pairing mode. On many models, the control is under Settings > Phone or Bluetooth > Pair Phone.
- When Garmin Connect finds the watch, tap Set Up, compare the six-digit code on both screens, then tap Done. Garmin Connect then continues to the device setup screens.
Older Samsung Galaxy Watches On iPhone
Select older Samsung watches can still pair with iPhone, but newer Wear OS models cannot. Samsung lists models such as the original Galaxy Watch, Galaxy Watch Active, Galaxy Watch Active2, Galaxy Watch3, and several Gear watches as iPhone-capable.
- Install Samsung Galaxy Watch from the App Store.
- Open the app and choose the watch from the setup screen.
- Approve the pairing request and follow the remaining setup prompts.
The Samsung app moves to the watch management screen when the supported model is connected. Galaxy Watch4 and later Wear OS generations, including Galaxy Watch8, need a compatible Android phone instead.
Why Won’t The Smartwatch Connect?
Pairing failures usually come from an unsupported watch, an old phone operating system, a watch still linked to another phone, or a companion app that was skipped. The symptom usually points to the next move.
| What You See | Likely Cause | What To Do |
|---|---|---|
| Watch never appears in its app | Bluetooth off or watch not in pairing mode | Turn Bluetooth on, reopen the app, and restart pairing mode on the watch |
| Apple Watch pairing animation is not detected | Camera pairing failed | Tap Pair Apple Watch Manually in the Watch app |
| Fitbit appears in Bluetooth but setup fails | Paired outside Google Health | Forget the Fitbit in Settings > Bluetooth, then add it inside Google Health |
| Garmin Connect cannot find the watch | Old Bluetooth entry or watch not in pairing mode | Forget the old entry, then use Add Device > Find Nearby Accessories |
| Watch says it is linked to another phone | Previous pairing still active | Unpair or transfer the watch from the old phone before pairing again |
| Galaxy Watch4 or later never appears | Model does not support iOS | Use a compatible Android phone; repeated iPhone resets will not change compatibility |
| Pixel Watch never appears | Pixel Watch does not support iPhone | Use a compatible Android phone |
After Pairing, Check The Data And Notifications
A connected smartwatch can still seem incomplete until iPhone permissions are approved. Open the watch’s companion app and allow the notification, Bluetooth, background activity, and health-data permissions you actually want the watch to use.
For fitness data, check whether the companion app is writing to Apple Health if that is part of your setup. For messages and calls, test one notification while the iPhone is locked; some third-party watches support alerts but not every reply, payment, or calling feature available on their native phone platform.
Choose The Pairing Path That Fits Your Watch
The watch model decides whether the iPhone can complete setup at all. Use the companion app that belongs to the watch, then stop troubleshooting if the manufacturer lists that model as Android-only.
- Apple Watch: use the Watch app and the on-screen pairing animation.
- Fitbit: use Google Health and add the device from Connections.
- Garmin: use Garmin Connect and Find Nearby Accessories.
- Older compatible Samsung watches: use the Samsung Galaxy Watch app.
- Pixel Watch or newer Wear OS Galaxy Watch: use a compatible Android phone because iPhone pairing is not supported.
- Supported watch still failing: restart both devices, remove any stale Bluetooth entry, then repeat setup inside the companion app.
References & Sources
Apple Support – Set up your Apple Watch: Apple’s current pairing sequence and setup requirements.