Apple Intelligence iOS 19 New Features: On-Device AI Fully Upgraded, Privacy Protection Strengthened

At WWDC 2025, Apple announced major upgrades to iOS 19 Apple Intelligence, adding on-device inference capabilities (supporting 30B parameter models), cross-app AI automation, and enhanced Siri (supporting multi-turn conversations and screen content understanding). The private cloud computing architecture ensures user data stays on device, with differential privacy technology protecting personalized learning data.