Start with the right iPhone and watchOS version
Your Apple Watch connects only to iPhones running iOS 17.1 or later, and your watch must run watchOS 10.1 or later. Before you start, check both devices. On your iPhone, go to Settings > General > About and look for the iOS version number. On your Apple Watch, go to Settings > General > About and find the watchOS version.
If either device is older, you will need to update it first. Connect your iPhone to Wi-Fi and power, then go to Settings > General > Software Update. For the watch, put it on its charger, connect to Wi-Fi through the watch's Settings > Wi-Fi menu, then go to Settings > General > Software Update. Updates can take 20 to 30 minutes, so plan ahead.
Your iPhone and watch do not have to be the same generation — a Series 9 watch works with an iPhone 14 or iPhone 15 — but both must be current enough to run the versions listed above. If your iPhone is more than four or five years old, it may not support the latest watchOS, and you would need a newer phone to use a current watch.
Key Takeaways
- Your iPhone and Apple Watch must be within a few generations of each other and running recent software versions before they can connect.
- The pairing process happens entirely through the Apple Watch app on your iPhone — you do not enter a PIN or password.
- Your watch needs either Bluetooth range (about 30 feet) or the same Wi-Fi network as your iPhone to stay connected after pairing.
- Cellular watches require a separate plan from your carrier and will not work on cellular data until you set up that plan after pairing.
Put your watch on the charger and turn it on
Place your Apple Watch on its magnetic charging cable. The watch should power on automatically within a few seconds. If it does not, press and hold the side button (the larger button on the right side of the watch) until you see the Apple logo, then release.
Wait for the watch to finish starting up. You will see "Hello" on the screen, then a series of setup prompts. Do not proceed through these yet — the pairing app on your iPhone will guide you through the rest. If you accidentally skip past the pairing screen, you can restart the watch by pressing and holding the side button again until you see the power-off slider, then slide to power off and turn it back on.
Open the Apple Watch app and start pairing
On your iPhone, open the Apple Watch app (the icon looks like a small watch face). Tap "Start Pairing" or the plus sign in the upper left corner. The app will ask you to allow access to your location, contacts, and photos — tap "Allow" for each one. These permissions let your watch show you directions, call contacts, and display photos on its screen.
The app will then ask whether this is a new watch or a watch you have owned before. Choose "Set up as new Apple Watch" unless you are restoring from a backup of a previous watch. If you choose to restore, the app will copy your apps, settings, and some data from your old watch to the new one, which can save setup time.
Hold your iPhone up to the watch and complete pairing
The Apple Watch app will show you a camera viewfinder and ask you to hold your iPhone near the watch. Position your iPhone so the watch's face is centered in the viewfinder on your phone's screen. The camera will scan a pattern on the watch's display — this is how the two devices identify each other. Keep the watch steady and the iPhone about 6 to 12 inches away until you see "Pairing in progress" on the watch screen.
Pairing usually takes 30 seconds to two minutes. Your iPhone will then ask you to enter your Apple ID password. This is the password for the Apple account you use on your iPhone, not a new password. Enter it and tap "Continue." If you have two-factor authentication enabled on your Apple ID (which most people do), you may need to approve the pairing from another device or enter a code sent to you.
Once pairing is complete, the watch will show "iPhone Connected" and the Apple Watch app will display your watch's name and settings options. Your watch and iPhone are now paired and will stay connected as long as they are within Bluetooth range or on the same Wi-Fi network.
Set up cellular service if your watch has it
If you have a cellular Apple Watch (marked "GPS + Cellular" on the box), you can use it to make calls and send messages even when your iPhone is not nearby. However, cellular does not set up automatically — you must set it up through your carrier.
Open the Apple Watch app on your iPhone, tap the "Cellular" tab, and follow the prompts to add a cellular plan. Your carrier will charge a separate monthly fee, usually $10 to $15. Some carriers bundle watch plans with your phone plan; others charge separately. You can also use your watch on Wi-Fi without a cellular plan — it will just need to be on the same network as your iPhone to send messages and make calls.
If you do not want cellular service, you can skip this step entirely. Your GPS-only watch or your cellular watch on Wi-Fi will work the same way for fitness tracking, notifications, and most other features.
Confirm your watch is syncing data
After pairing, your watch should begin syncing health data, apps, and settings with your iPhone. Open the Apple Watch app and tap the "My Watch" tab at the bottom. You should see your watch listed with a green dot next to its name, meaning it is connected. If the dot is gray, your watch and iPhone are not currently in range or on the same network.
Check that your watch has access to Wi-Fi by going to Settings > Wi-Fi on the watch itself and selecting your home network. This ensures your watch can stay connected even when Bluetooth is out of range. You can also check that notifications are turned on by opening the Apple Watch app, tapping "Notifications," and making sure the toggle is on.
Your watch will now receive notifications from your iPhone, track your activity, and sync your health data automatically. The first full sync can take a few hours, especially if you have many apps installed on your iPhone.
Troubleshoot if pairing fails
If the camera scan does not work, try restarting both devices. On your iPhone, press and hold the side button until the power-off slider appears, then slide to power off and wait 10 seconds before turning it back on. On your watch, do the same with the side button. Then open the Apple Watch app again and try pairing from the start.
If you see an error message about software versions, make sure both devices are fully updated before trying again. If your watch is not appearing in the Apple Watch app at all, make sure Bluetooth is on on your iPhone (check Control Center by swiping down from the top right), and make sure your watch is powered on and showing the pairing screen.
If pairing succeeds but your watch keeps disconnecting, move closer to your iPhone or connect your watch to Wi-Fi. Bluetooth range is about 30 feet in open space but shorter through walls. If you are far from your iPhone regularly, a cellular watch or a watch that stays on your home Wi-Fi will stay connected longer.
Frequently Asked Questions
Can I pair my Apple Watch with more than one iPhone?
No. An Apple Watch pairs with one iPhone at a time. If you want to switch to a different iPhone, you must unpair the watch first by opening the Apple Watch app, tapping "My Watch," then tapping the info icon next to your watch name and choosing "Unpair Apple Watch." Then you can pair it with the new iPhone.
What if I forgot my Apple ID password?
Go to iforgot.apple.com on your iPhone or computer and follow the steps to reset your password. You will need access to the email address or phone number associated with your Apple ID. Once you have reset your password, you can complete the watch pairing process.
Do I need Wi-Fi to pair my watch with my iPhone?
No. Pairing uses Bluetooth and does not require Wi-Fi. However, you should connect your watch to Wi-Fi after pairing so it can stay connected when you are away from your iPhone and do not have a cellular plan.
Why does my watch keep saying it is not connected to my iPhone?
Your watch and iPhone need to be within Bluetooth range (about 30 feet) or on the same Wi-Fi network. If you are far apart, move closer or make sure your watch is connected to your home Wi-Fi. If the problem continues, restart both devices and check that Bluetooth is on on your iPhone.
Can I use my Apple Watch without an iPhone?
Not for initial setup — you must pair with an iPhone first. After pairing, a cellular watch can function independently for calls, messages, and fitness tracking, but it still needs to sync with your iPhone periodically. A GPS-only watch needs to be within Bluetooth range or on the same Wi-Fi network as your iPhone to send messages or make calls.