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The Apple Watch has a built-in sleep tracker, but it can be hard to find. Here’s how to access it, how to set it up so that it properly records how much sleep you’re getting, and how to understand the results.
Does my Apple Watch support sleep tracking?
Sleep tracking was introduced with WatchOS version 7 (released in 2020). That version of WatchOS works on watches from Series 3 and newer, paired with an iPhone 6S or newer, with iOS 14 and newer.
In other words: The oldest devices that will work are a 2015 phone, a 2017 watch, and 2020 releases of the software that run on them. As long as your Apple Watch isn’t truly ancient, it should support this. (If you’re looking to buy a new Apple Watch, though, the Series 11 is the newest.)
...Keep reading this article on Life Hacker.
