iOS 26 Opens Phone & Messaging APIs for EU Developers: Third-Party Call & SMS Apps Now Possible Technology iOS 26 Opens Phone & Messaging APIs for EU Developers: Third-Party Call & SMS Apps Now Possible Do Son July 9, 2025 0 iOS 26 introduces a new API allowing EU developers to create third-party phone and messaging apps with cellular call and SMS/MMS/RCS support, likely due to EU DMA compliance.