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FIrst IOS Version
Apple released the first version of what became iOS – concurrently with the first iPhone. -
iPhone OS 2.0
Public release of iPhone OS 2.0, with upgrades through version 2.2.1 made available. -
Iphone OS 3.0 Release
Pelease date for iPhone OS 3.0. It was updated through (and including) version 3.1.3 (release date February 2, 2010).[4] The first generation iPod Touch and iPhone have iPhone OS 3.1.3 as their newest available version. The iPad was introduced with iPhone OS 3.2, later updated to 3.2.2, a version made specifically for the iPad. -
Release of the iOS 4.0
iOS 4.0 was released to the public and was made available only to the iPod Touch and iPhone. iOS 4.0 was announced to have over 1500 new APIs for developers, with the highly anticipated multitasking feature.[5] The iPod Touch (2nd generation) and iPhone 3G have iOS 4.2.1 as the final version available. Nevertheless, many features are not available for the iPhone 3G or iPod Touch (2nd generation), such as multitasking and home screen backgrounds. iOS 4.2 is the first version to bring major featur -
Preview of iOS 5
Apple previewed iOS 5, Apple TV 4.4 beta and the iOS SDK 5 beta along with iCloud beta among other products. This update introduced iMessage chat between devices running iOS 5, a new notification system, Newsstand subscriptions, Twitter integrated into iOS, Reminders app, Enhancements to AirPlay, full integration with iCloud and over 200 new features. iOS 5.0 supports all iPad models, iPhone 3GS, iPhone 4 GSM & CDMA, and the iPod Touch (3rd & 4th generation). -
iOS WiFi support
The launch of the iOS 5 update on October 12, 2011 (including iOS 5.0.1 released on November 10, 2011) led many users to report a major bug causing the device to lose Wi-Fi access. This problem has supposedly been fixed with the release of iOS 5.1.1 -
Maps for iOS
Apple has admitted that there were several bugs in the mapping app on iOS 6, with cities in the wrong location, some places being missed off altogether, some places misnamed and places of interest in the sea. -
Release of iOS 7.x
On September 20, 2013, Apple TV (2nd generation) onwards received the iOS 7.0 software update, with version 6.0's main features including iTunes Radio and AirPlay from iCloud. -
Release of iOS 7.0.4
Stability and performance
Includes general performance and stability improvements. -
Release of iOS 7.1
Security option to require that iOS devices or Macs be verified with a one-time, onscreen code before using AirPlay (requires iOS 7.1 or later on an iOS device or a Mac with OS X 10.9.2 or later).
Adds support to allow an AirPlay device to discover Apple TV over Bluetooth in environments where multicast or Bonjour traffic is blocked on the network or the AirPlay device is on a different subnet.
