Returns a Boolean value indicating whether the current iOS device is able to use a session object.
- iOS 9.0+
- watchOS 2.0+
true if a session object is available or
false if it is not.
Before retrieving the default session object, call this method to verify that the current device supports watch connectivity. Session objects are always available on Apple Watch. They are also available on iPhones that support pairing with an Apple Watch. For all other devices, this method returns
false to indicate that you cannot use the classes and methods of this framework.