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Christmas Gift Guide

iOS 3 - Copy, cut, and paste

iOS 3 - Landscape keyboard

iOS 3 - Multimedia messaging

iOS 3 - Spotlight search

iOS 3 - Voice memos

iOS 3.1 - Trim or save as new clip after editing

iOS 4 - Home screen folders

iOS 4 - Multitasking

iOS 4 - Camera zoom

iOS 4 - Unified e-mail inbox

iOS 4 - Spell check

iOS 4.1 - Game Center goes live

iOS 4.2 - AirPrint

iOS 4.3 - Search in Safari

iOS 4.3 - Personal hot spot

iOS 5 - Notifications

iOS 5 - Camera editing tools

iOS 5 - Safari Reader

iOS 5 - Reminders

iOS 5 - Twitter integration

iOS 5 - Twitter integration

iOS 5 - iMessage

iOS 5 - PC free for wireless syncing and app updates

iOS 5.1 - Camera shutter on lock screen

iOS 6 - Apple Maps

iOS 6 - Tailored search results in Siri

iOS 6 - Passbook

iOS 6 - Facebook integration

iOS 6 - Hourly forecasts in the weather app

iOS 7 - A completely overhauled design

iOS 7 - Control Center

iOS 7 - New multitasking design

iOS 7 - AirDrop

iOS 7 - New design for the camera app

iOS 7 - iTunes Radio

iOS 7 - Cover Flow-like interface in Safari

Apple's iOS mobile operating system is now almost 7 years old, and it continues to evolve every few months. With WWDC just a month away, here's a look back at the major releases since iOS 3 and the biggest features that each update introduced.

Editors' note: This gallery was updated May 7, 2014.

Caption by / Photo by Apple's iOS mobile operating system is now almost 7 years old, and it continues to evolve every few months. With WWDC just a month away, here's a look back at the major releases since iOS 3 and the biggest features that each update introduced. Editors' note: This gallery was updated May 7, 2014.
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