connecting iwatch to phone with serial number
Watch is not connecting to phone after multiple tries
iPhone 12, iOS 17
Question marked as
Here are instructions on how to pair an Apple Watch to n iPhone. You will need more than the serial number.
Set up and pair your Apple Watch with iPhone - Apple Support
If you are not the original owner of this Apple Watch, and it is locked, you will need to contact the original owner and ask them to turn off the activation lock. These are the steps they should have followed before giving/selling you that watch.
Before you buy, sell, give away, or trade in - Apple Support (AM)