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.