Superficially it's a bigger screen, but the real difference is in a user interface designed for minimal driver distraction. I've only used CarPlay, but the mes

Superficially it's a bigger screen, but the real difference is in a user interface designed for minimal driver distraction. I've only used CarPlay, but the messaging app is a perfect example. The phone's native messaging interface is of course inappropriate for safe driving, being primarily visual. CarPlay's messaging app only gives you a glanceable list of contacts, and you tap one to dictate a message, which is then also read back to you for confirmation (no message text is ever displayed on the screen). I've had entire text conversations without taking my eyes off the road. For maps and music, the difference may be somewhat less profound, but the same design principles combined with a larger screen that equates to fewer milliseconds scanning for information or steadying your finger to touch a small button, still have a significant effect in keeping driver app use as safe as possible.