Difference Between

iOS 4.2.1 vs iOS 5 Apple iOS 5 is the latest version of Apple OS for iOS devices released on 6 June 2011. iOS 4.2.1 was released in 2010 with iPhone 4. iOS 4.2.1 is the widely used operating system until now, and the first OS to be considered as a bench mark platform for smartphones. Though it faced some criticism... 

iOS 5 vs iOS 4.3.3 | Apple iOS 4.3.3 vs iOS 5 Features and Performance | iOS 4.3.4 updated iOS 4.3.3 is the last version upgrade to Apple’s OS for iOS devices. The new version is iOS 5, which was unveiled at the Apple’s WWDC 2011 in San Francisco on 6 June 2011. Though iOS 4.3.3 has more features compared...