The European Union has issued a warning to Apple to comply with the new Digital Markets Act (DMA), which mandates interoperability of its iOS operating system with other technologies. Apple has six months to align with these requirements or face significant fines, potentially up to 10% of its global annual sales. The EU's actions aim to ensure fair competition by allowing rival companies and third-party developers access to iOS functionalities such as notifications, device pairing, and Apple Pay. EU competition chief Margrethe Vestager emphasized the importance of effective interoperability for maintaining fair and open digital markets. Apple argues that increased interoperability could compromise user security but has created ways for developers to request such access. If Apple fails to comply, it may face further investigations and additional penalties.