Update your old iPhone
Before you switch your Apple Watch from your old iPhone to a new iPhone, update your old iPhone to the latest version of iOS. After you update to the latest version of iOS and watchOS, go to the Home screen on both your Apple Watch and iPhone at the same time.
If you already erased your old iPhone or no longer have it, you can get help.
Back up your old iPhone
If you don't have your old iPhone, continue to the next step and use your most recent backup.
Set up your new iPhone
During setup, keep your Apple Watch close to your new iPhone. When your iPhone asks if you want to use your Apple Watch, tap Continue.
After setup, you can start using your Apple Watch with your new iPhone.
Follow the steps below for your question.
What if my iPhone doesn't ask if I want to use my Apple Watch during setup
What if I transferred my content to my new iPhone using iTunes, but my Health and Activity content is missing?
To back up and restore your Health and Activity content, you need to restore your new iPhone from your previous iPhone’s backup. If you use iTunes, make sure that you encrypt your backup.
If you want to restore your missing Health and Activity content:
- If you have your old iPhone and didn't erase it, make a new iCloud backup or encrypted iTunes backup. Then erase your new iPhone and restore it from the new backup. Remember to pair your Apple Watch and iPhone again.
- If you don't have your old iPhone or you can't back it up, you can't recover your Health and Activity content.
What if I didn’t unpair my Apple Watch before setting up my new iPhone?
Your Apple Watch might still be paired with your old iPhone. Use the steps below to pair your devices.
If you have your old iPhone, and you didn't erase it
Unpair your Apple Watch from your old iPhone. Then choose one of these options depending on when you set up your new iPhone:
- If you just restored your new iPhone from a recent backup, pair your devices. When you're asked, restore from a watch backup. Your recent Activity, Workouts, or settings content might be lost depending on how old the backup is.
- If your iPhone backup is several days or weeks old and you want to preserve as much content as possible, erase your new iPhone. Then transfer the content from your old iPhone to your new iPhone. You might lose some of the content on your new iPhone. Remember to pair your Apple Watch and iPhone again.
If you have your old iPhone, but you erased it
You should erase your Apple Watch, then pair it with your new iPhone. If you restored your new iPhone from a backup, you can restore your watch from a backup when you pair. You might lose Activity, Workouts, or settings on your watch that changed between the last backup and now.
If you don't have your old iPhone or a backup
You should erase your Apple Watch, then pair it with your new iPhone. If you’re asked to restore from a watch backup, select the most recent backup. You will lose Activity, Workouts, or settings on your watch that changed between the last backup and now.
Without an iPhone backup, you’ll need to set up your Apple Watch as new. You will lose any previous Activity, Workouts, or settings, but your other content will sync from the new iPhone to your Apple Watch.