CarPlay, a feature introduced by Apple in 2014, allows iPhone users to interact with their devices through a car’s infotainment system while driving. This integration provides access to apps like music, navigation, and messaging, all displayed on the car’s screen. While setting up CarPlay is usually simple, users might run into issues when multiple iPhones are connected to the same vehicle. Only one iPhone can be active at a time, and the car may automatically connect to the first available device, which could be the passenger’s phone instead of the driver’s. This can be confusing, especially when trying to use the driver’s phone for navigation or other features. The process for switching between devices depends on the car manufacturer. Some systems allow users to select a preferred phone through Bluetooth settings or a device management menu. For example, Hyundai lets drivers switch between CarPlay and Android Auto while driving. If the car doesn’t connect to the desired iPhone automatically, a quick fix is to turn off Bluetooth and Wi-Fi on the other device. Some users have also tried using a wired CarPlay connection to prioritize the plugged-in iPhone over a wireless one, but this method has had mixed results, with limited success reported on forums like Reddit. CarPlay offers more than just music and navigation. Its app library includes features like AI chatbots, fuel price trackers, and parking spot finders. For passengers who want to control the music without switching CarPlay connections, Apple introduced SharePlay with iOS 17. This feature allows passengers to join the driver’s Apple Music session and add, rearrange, or remove tracks using their own device, as long as the driver has an Apple Music subscription. Similarly, Spotify users can use the app’s Jam feature, which lets passengers join the host’s session and contribute to the music queue from their phones, though a Spotify Premium subscription is not required for in-person use. However, SharePlay and Spotify Jam only allow passengers to control music. If passengers need to use navigation, read messages, or access other CarPlay features on the car’s screen, they’ll need to manually switch connections using the methods described earlier. This means that while Apple and other app developers continue to expand CarPlay’s capabilities, managing multiple devices in a car still requires some effort from the user to ensure the right phone is connected for the right task.