IOS 5

iOS 5, Codenamed "Telluride", was the 5th major release of iOS designed and distributed by Apple for the iPhone, iPad, and iPod Touch, being announced at WWDC 2011 alongside tvOS 5 and Mac OS X Lion, before being released to the general public on October 12 of that same year. It was the predecessor to iOS 6 and the successor to iOS 4. iOS 5 was released on October 12, 2011 and can be downloaded at iTunes.

Trivia

 * Initial release on iPhone 4S
 * iPhone 3G and 2nd generation iPod Touch were not supported on this release
 * iPad (1st generation) and iPod touch (3rd generation) had limited support
 * iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (4th generation), iPad 2 and iPad 3 were all fully supported
 * This Is The First IOS To Feature Music And Newsstand.
 * This Is The First Time To Introduce Siri.
 * This Is The First IOS To Feature Swipe Up To Camera.
 * This Is The Last IOS To Use The Original Settings Icon.

iPhone

 * iPhone 3GS
 * iPhone 4
 * iPhone 4S

iPod Touch

 * iPod Touch (3rd generation)
 * iPod Touch (4th generation)

iPad

 * iPad (1st generation)
 * iPad 2
 * iPad (3rd generation)