My iwatch is not pairing with my new iPhone

Have you unpaired it from your old iPhone first?

Follow these steps:

Update your old iPhone

Before you switch your Apple Watch to a new iPhone, update your old iPhone to the newest version of iOS that's available.* You should also update your Apple Watch. It could take from several minutes to an hour for the updates to complete. You might want to update overnight or wait until you have time, and make sure that both of your devices are charged.

* You might see that your iPhone is up to date on its current version, and there's an update available. For example, even if your iPhone is up to date on the latest version of iOS 14, there might be an option to update to iOS 15.

Check your Health and Activity settings

If you back up using iCloud, go to Settings > [your name] > iCloud and make sure that Health is on.

If you back up using your computer, encrypt your backup to save your Health and Activity content.

iCloud doesn't store your Activity Sharing data.

Back up your old iPhone

Use these steps to back up your old iPhone in iCloud or on your computer. Your iPhone also backs up your Apple Watch. Learn what's backed up. 

Set up your new iPhone

Set up your new iPhone. When asked if you have an iCloud or iTunes backup, choose your most recent backup to restore your data from your old device to your new device. Make sure that your iPhone and Apple Watch are up to date; if they aren't, you might not see your backup in the list. 

If your iPhone asks if you want to use your Apple Watch, tap Continue. If it doesn't ask, you can still set up your Apple Watch manually in the next step. Get help if your iPhone doesn't ask if you want to use your Apple Watch.

Open the Apple Watch app on your new iPhone

Keep your Apple Watch and iPhone close together. Open the Apple Watch app on your iPhone.

If your iPhone asks you to confirm that you want to use your watch, follow the onscreen steps to finish setting up.

If your iPhone asks you to Start Pairing, unpair your Apple Watch so that you can set it up. 

After setup, you can start using your Apple Watch with your new iPhone.

If you don't have your old iPhone anymore make sure to follow these steps

Your Apple Watch might still be paired with your old iPhone. Use the steps below to unpair:

1. Erase your Apple Watch. 
2. Set up your new iPhone and sign in to iCloud. If you've already set up and signed in, skip this step.
3. Open the Apple Watch app on your new iPhone, then pair your watch with your new iPhone.
4. Try to restore from a backup. Make sure that your iPhone and Apple Watch are up to date; if they're not, you might not see your backup in the list. You will lose Activity, Workouts, or settings on your watch that changed between the last backup and now. If you use iCloud in iOS 11 and later, Health and Activity data is stored in iCloud and automatically kept up to date on devices where you're signed in with the same Apple ID. 

• • If you’re asked to restore from a watch backup, select the most recent backup. 
  • If you don't have a backup, you need to set up your Apple Watch as new. 

1. Follow the onscreen steps to finish setting up.
2. Start using your Apple Watch with your new iPhone. You might need to wait a few days for all your iCloud data to appear.