Bluetooth: Apple Watch on watchOS 4

Learn how to connect to Bluetooth on Apple watchOS 4.


On this page:





  • You can pair one Apple Watch to your iPhone at a time.
  • To use your Apple Watch series 3, you'll need to pair it with an iPhone 6 or later running the latest version of iOS.
  • To use your Apple Watch series 1 or 2, you'll need to pair it with an iPhone 5s or later running the latest version of iOS.
  • Make sure you iPhone is connected to a Wi-Fi or cellular network and Bluetooth is turned on.
  • Make sure both devices are charged and keep them close together as you pair and sync them.


To turn on Bluetooth and pair with a headset or other device, follow these steps:


  1. Open the Watch app on your iPhone.
  2. On the Watch, choose your language using the Digital Crown or swiping.
  3. Tap Start pairing on the Watch, then on the iPhone.
  4. Hold the Watch in front of the iPhone camera, centered in the square, until you see the message Your Apple Watch is Paired.
  5. On your iPhone, tap Set Up as New. If you’ve set up once before, you can tap Restore from Backup on your iPhone and follow onscreen steps.
  6. Pick a wrist by tapping Left or Right on your iPhone. Then read terms and conditions and tap Agree to continue.
  7. Sign in with your Apple ID.
  8. Review the Usage and Diagnostics, Location Services, and Siri settings.If you change the settings of these services, those changes will apply to both of your devices.
  9. On your iPhone, choose whether to make a passcode for your Apple Watch. You'll need a Passcode for features like Apple Pay.
  10. If you tap Create a Passcode or Add a Long Passcode on your iPhone:
    1. You'll be asked to make a personal code using your Apple Watch.
    2. Then decide whether your Apple Watch will unlock with your iPhone.
  11. Tap Install All to sync iPhone apps that work with Apple Watch.
    • Only apps that are compatible with Apple Watch will sync.
    • Tap Choose Later to sync only basic information like Mail, Contacts, and Messages.
  12. Your iPhone and Apple Watch will begin to sync.
    1. The length of this process varies depending on the amount of data you're syncing.
    2. Keep your devices close together until you hear a chime and feel a gentle tapping sensation from your Apple Watch.



You cannot turn Bluetooth on or off, but you can unpair your Watch from your iPhone.


  • Unpairing will erase all data from your Watch.
  • When you unpair your device, your iPhone automatically creates a backup of your Watch.
  • Keep your Apple Watch and iPhone close together as you unpair them.
  • If your Apple Watch is unpaired while out of range of your iPhone, the backup won’t be created.


To unpair you Apple device, follow these steps:

  1. Open the Apple Watch app on your iPhone.
  2. Tap My Watch, then tap the Watch you want to unpair.
  3. Tap the information icon next to your Watch (looks like an "i" in a circle).
  4. Tap Unpair Apple Watch > Unpair [Apple ID]'s Apple Watch.
  5. If your Watch has a rate plan connected to an eSIM, choose to keep or remove the plan and eSIM information.
    • Tap Keep Plan if you want to keep using your Watch with the same line.
    • Tap Remove Plan if you want to use your Watch with a different line, account, or carrier.
  6. If prompted, enter you Apple ID password.
  7. Tap Unpair.
  8. Your Watch information is backed up to your iPhone, then the Watch is erased.