Expanding and modifying Android navigation can provide more functions and convenience for car owners. Android navigation system is usually equipped with large-screen touch screen, navigation software and multimedia functions. , which can realize navigation, music, video, Bluetooth calling and other functions. In addition, some Android navigation systems also support mobile phone interconnection function, which can interact with car navigation systems such as applications and address books on mobile phones. Therefore, for car owners who like technology and pursue a better driving experience, modifying Android navigation is a good choice.