The iCloud Activation Lock is a security feature designed by Apple to prevent unauthorized access to your iPhone if it's lost ...

Activation Lock is an anti-theft system for Apple devices meant to prevent unauthorized usage or erasure. It's available on most Apple products, such as iPhones, iPads, Macs, and Apple Watches.

If you are selling or giving away your Apple Watch, you'll need to remove the Activation Lock before someone else can begin to use it. This removes your Apple ID and other personal information ...