Flashback: iOS 4 adds multitasking, FaceTime and other important features - GSMArena.com news
iOS 7.1 on the iPhone 4: As good as it's going to get | Ars Technica
🍏 Apple Emoji List — Emojis for iPhone, iPad and macOS [Updated: 2023]
Hands on iPhone 4 and the iOS 4 (iPhone OS 4) - YouTube
iOS 4 ist zurück - so installieren Sie die nostalgische App - Macwelt
iPhone Handbuch Version iOS 14 - PREMIUM Videobuch: Buch + 4 h Videotutorials - für alle iPhones geeignet; komplett vierfarbig und für Einsteiger optimal : Anton Ochsenkühn: Amazon.de: Bücher
iOS 4 has been lovingly recreated as an iPhone app - The Verge