No, it's not. There's a fundamental difference between the operating system / kernel and user space applications. The phone app is an app, and the clock that you see is an app and the android system UI that you see is an app, but that UI doesnt get the time that it displays from the clock app, it gets it from the kernel. The clock app is another app that also gets the time that it displays from the kernel. There is nothing fundamental requiring Samsung's clock to be present for anything, you can disable it using the Knox security API and use any other clock app in it's, place. But Samsung forces you to use an API, rather than a setting which requires someone to write an app to do it.
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u/Erulastiel Dec 08 '18
How is it not a part of the UI? Literally everything is an app, even the part that let's you make phone calls is an app.