Apple has released the iOS 18.4 update for iPhone, which includes new emojis and CarPlay improvements. Users report serious functionality issues with CarPlay after the update. Errors are noted on the displays of Honda cars, Mazda CX-30 from 2025, Audi, and Ford. A user notes: “The iPhone connects and disconnects again and again”. Another user states: “iOS 18.4 has broken wireless CarPlay and made the connection unstable”. The driver of a Mazda CX-30 had to connect and disconnect the device five times to get CarPlay working.
Volkswagen customer support acknowledged the existence of issues with iOS 18.4 and stated that Apple needs to fix them. Users are trying various troubleshooting methods, including re-pairing phones with cars and restarting devices. Previously, users reported rapid battery drain after installing the update.