How to unpair an iwatch to my old phone that I don’t have anymore
I can’t pair my watch with my new iPhone, my iwatch is still paired with my old iPhone that I don’t have anymore
Apple Watch Series 7, watchOS 9
Question marked as
try going to
How to pair your Apple Watch with a new iPhone - Apple Support
and scroll to the section named
"If you don't have your old iPhone or you erased it"