"Smart features" appear along a variety of devices, including phones, TVs, and smartbulbs. It's a blanket term that describes any automated or context-sensitive functionality. For example, a smartbulb's ability to turn on when you come home is a smart feature, as is a phone feature that charges only when renewable energy sources are available. Other smart features are live captions, dictation, and the iPhone's ability to automatically remove the subject of a photo.