Not all Apple Watches work with every iPhone, and you'll likely need an iPhone 6s or newer to use any new Apple Watch.
Apple today added the iPhone 11 Pro Max to its vintage products list. However, the iPhone 11 Pro was not added to the list ...
The Apple Watch 11 is supposed to be able to alert users about “possible hypertension” by using data from an optical heart rate sensor “to analyze how a user’s blood vessels respond to the beats of ...