iOS 4 Features: MultiTasking, Folders, and Much More - MacRumors
iPhone 4 through the ages: From 'antennagate' to iOS 7 (pictures) - CNET
iOS 4 review | iMore
Features iOS 4 Is Still Missing | Cult of Mac
Download iOS 4.0 Firmware for iPhone and iPod touch | Redmond Pie
Hands on iPhone 4 and the iOS 4 (iPhone OS 4) - YouTube
iOS 4 - Wikipedia
Flashback: iOS 4 adds multitasking, FaceTime and other important features - GSMArena.com news
Apple's iOS 4 Explored
iPhones Compared on Original iOS Versions - iOS 4 vs 5 vs 6 vs 7 vs 8 vs 9! - YouTube
iOS 4: tutto quello che c'è da sapere sul nuovo sistema operativo dell' iPhone! - iPhone Italia
iOS 7.1 su iPhone 4, ci sono miglioramenti? - iPhone Italia
Facebook App Is Finally iOS 4-Compatible. Fast App Switching, High Rez Graphics | TechCrunch
5 ways Apple's iOS 4 'breathes new life' into iPhone | Computerworld
Apple iPhone 4: Internet - iPhone 4 review - Page 7 | TechRadar
Review: iOS 4 is a Welcome Evolution to the Best Smartphone Platform | Cult of Mac
Apple rilascia la seconda beta pubblica di iOS 17 e degli altri sistemi operativi | SmartWorld
Preview: Five reasons to run iOS 4 for iPad - Hardware - Software - iTnews
Flashback: iOS 4 adds multitasking, FaceTime and other important features - GSMArena.com news
Rivestire il proprio iPhone con iOS 4 è possibile grazie un'app dettagliatamente realizzata | SmartWorld
![Download iOS 4.0 for iPhone 4, 3GS, 3G and iPod touch [Final Version] | Redmond Pie](https://cdn.redmondpie.com/wp-content/uploads/2010/06/iOS4foriPhone.jpg "Download iOS 4.0 for iPhone 4, 3GS, 3G and iPod touch [Final Version] | Redmond Pie")
Download iOS 4.0 for iPhone 4, 3GS, 3G and iPod touch [Final Version] | Redmond Pie
iOS 4 Has Been Rebuilt as an iPhone App | PCMag
Ars reviews iOS 4: what's new, notable, and what needs work | Ars Technica
iOS 4 è ora un'app per iPhone
How to Enable Emoji on iPhone iOS 4
