To pair your Apple Watch with a new iPhone, the key is that your watch is tied to your old iPhone through an encrypted backup stored in iCloud or on your device. The easiest path is to restore your new iPhone from a backup of your old one, then let the Watch app reconnect automatically. If that isn’t an option, you’ll unpair the watch from your old iPhone (which creates a fresh backup) and then pair it to the new one during setup. Either way, you keep your activity history, watch faces, apps, and settings.
- Your Apple Watch data lives in your iPhone backup, not only on the watch itself
- Restoring your new iPhone from a backup usually reconnects the watch automatically
- If you can't restore from backup, unpair from the old iPhone first to avoid losing data
Before you begin
A little preparation prevents the most common pairing headaches. Confirm the following on both devices:
- Both devices are charged (ideally above 50%) and near each other on the same Wi-Fi network.
- Bluetooth and Wi-Fi are on. Apple Watch pairing relies on both. If yours won’t connect, our guide to a smartwatch that won’t connect to Bluetooth covers deeper fixes.
- Your Apple ID and passcode are handy. You’ll need your Apple ID password and, for cellular models, your carrier plan details.
- Software is current. Update your old iPhone and Apple Watch before transferring so versions stay compatible.
Method 1: Transfer during new iPhone setup (recommended)
This is the smoothest route because it moves your Apple Watch and its data in one motion. Use it when you’re setting up the new iPhone from scratch.
- Back up your old iPhone. Go to Settings > [your name] > iCloud > iCloud Backup and tap Back Up Now, or connect to a computer for an encrypted backup. An encrypted backup is important because it preserves Health and Activity data.
- Start the new iPhone. Follow the on-screen prompts. When offered, use Quick Start by holding the new iPhone near the old one, or choose Restore from iCloud Backup.
- Sign in with the same Apple ID. Your Apple Watch is linked to that account, so it must match.
- Wait for the restore to finish. Once your apps and data return, open the Watch app on the new iPhone.
- Confirm the reconnection. In most cases the watch appears automatically and syncs in the background. If prompted, tap to reconnect and enter your Apple Watch passcode.
Method 2: Unpair and re-pair manually
Use this when you’re not restoring the new iPhone from a backup, are switching to a different Apple ID, or want a clean start. Unpairing is safe: it automatically creates a fresh backup of your watch on the old iPhone.
- Keep both iPhones nearby if possible. On the old iPhone, open the Watch app, tap All Watches, then the info (i) button next to your watch.
- Tap Unpair Apple Watch. Confirm, and enter your Apple ID password to turn off Activation Lock. Cellular users can keep the plan if they’ll re-pair to the same account soon.
- Let the backup complete. The old iPhone saves a fresh watch backup during this step.
- Bring the watch to the new iPhone. Open the Watch app and tap Start Pairing. Hold the watch up to the camera so the animation fits in the viewfinder.
- Choose Restore from Backup. Pick your most recent watch backup, then follow the prompts to set your passcode and preferences. This is essentially the same flow described in our walkthrough on how to set up an Apple Watch for the first time.
Handling cellular (LTE) plans
If you own a GPS + Cellular Apple Watch, moving to a new iPhone may require your carrier to re-provision the plan. During pairing, choose to set up cellular and follow the carrier prompts. Some carriers handle it automatically; others need a quick call. For background on when the standalone connection actually matters, see our explainer on whether you need a data plan for a smartwatch.
Troubleshooting common pairing problems
- Watch won’t appear in the Watch app: Restart both devices, keep them close, and make sure Bluetooth and Wi-Fi are on.
- Stuck on “pairing”: Move away from crowded Wi-Fi, or tap Pair Manually and enter the six-digit code shown on the watch.
- No backup to restore: If you never backed up the old iPhone, you can still pair as new, but historical Activity data may not carry over.
- Battery draining fast afterward: Heavy background syncing is normal for a day or two. If it persists, our battery-saving tips can help.
Frequently asked questions
Will I lose my Activity and Health data?
No, as long as you use an encrypted iPhone backup or unpair through the Watch app. Both methods save your watch’s data so it can be restored. Health and Activity history is preserved through your iPhone backup, not the watch itself.
Do I need my old iPhone to pair the watch?
Not strictly, but it helps. If you still have the old iPhone, unpairing there creates the freshest backup. If it’s gone, you can restore from your most recent iCloud backup during new-iPhone setup instead.
Can I pair one Apple Watch with two iPhones?
An Apple Watch pairs with one iPhone at a time. To switch, you either transfer via backup or unpair from the first iPhone before pairing to the second. The same Apple ID must be used on both.
What if my watch is locked to someone else’s Apple ID?
You’ll need the previous owner to remove Activation Lock by unpairing and signing out of their Apple ID. Without that, the watch can’t be paired to a new iPhone.