It wouldn’t, because, I would argue, a modern phone serves as an API to apps, and all of its “features” are a necessity to facilitate its main feature, the apps

It wouldn’t, because, I would argue, a modern phone serves as an API to apps, and all of its “features” are a necessity to facilitate its main feature, the apps it serves up. Some must be integrated to provide those APIs effectively (eg store, file storage), but the rest that are provided by default I would consider separate products, given that they are discrete, often easy to remove, and easily replaced by 3rd party apps.