I assume that an Apple Watch running a particular version of watchOS can't be paired with an iPhone running any iOS version, right?
Is there a table that list the compatibility between the different versions of watchOS and iOS?
There are latest watchOS 5
, and watchOS 6 beta
version.
As per Apple official documentation:
watchOS 5 requires iPhone 5s or later with iOS 12 or later, and one of the following Apple Watch models:
Apple Watch Series 1
Apple Watch Series 2
Apple Watch Series 3
Apple Watch Series 4
Reference:- Watch OS 5
Also, There are list of 'watchOS' version which are 'iOS' version based.
See this: Watch OS