Operating Systems – Foundations of Modern Computing - iOS : Apple's mobile operating system

📱 Evolution and Features of Apple's iOS Offer an overview of iOS, Apple's mobile operating system, ranging from high-level marketing claims to comprehensive technical and historical details. One snippet introduces a future version, iOS 26, highlighting a new "Liquid Glass" design that is intended to feel both familiar and beautiful. The bulk of the text entry on iOS, which provides an extensive breakdown of the system's history, features like its user interface (UI) based on direct manipulation and various accessibility functions (e.g., VoiceOver), and architecture built upon the XNU kernel. This deeper text discusses application management, multitasking implementation, the evolution of features such as Siri and the App Store, and the operating system's notable market share as the second most popular worldwide, despite being a closed and proprietary system.