With watchOS 7 you can now setup an Apple Watch for a family member even if they do not own an iPhone. This feature is handy if you want your kids to have a watch so you can track them safely or for an older family member especially with the fall detection.
You will need and cellular Apple Watch Series 4 or newer to use this feature. Simply follow the guide below to setup the watch for your family member.
Turn on Apple Watch, press and hold the side button until the Apple logo appears.
Bring your iPhone near the Apple Watch, wait for the Apple Watch pairing screen to appear on your iPhone, then tap Continue. Or open the Apple Watch app on your iPhone, tap All Watches, then tap Pair New Watch.
Tap Set Up for a Family Member, then tap Continue on the next screen.
When prompted, position your iPhone so that the Apple Watch appears in the viewfinder in the Apple Watch app. This pairs the two devices.
Tap Set Up Apple Watch. Follow the instructions on your iPhone and Apple Watch to finish setup.