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Apple has released watchOS 9, the latest version of the operating system for Apple Watch. It comes with new features designed to keep you healthier and more connected. Here’s how to install watchOS 9, followed by descriptions of the top features. How to install watchOS 9To install watchOS 9, you must have an Apple Watch Series 4 or later, along with an iPhone 8 or later or iPhone SE (2nd generation) or later, running iOS 16, which was also released on Monday. After updating your iPhone to iOS 16, you can upgrade your Apple Watch. Before you install the update, you must place your Apple Watch o…