- published: 13 May 2014
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This is a list and comparison of devices designed and marketed by Apple Inc. that run a Unix-like operating system named iOS, often referred to simply as iDevices. The devices include the iPhone multimedia smartphone, the iPod touch, which is similar to the iPhone but has no cell phone hardware, and the iPad tablet computer. All three devices function as digital audio and portable media players and Internet clients. The Apple TV, which also runs iOS, is a set-top box for streaming local media to a connected television set, and has no screen of its own.
The operating system on iOS devices can be updated through iTunes, or, on iOS 5 or later, directly on the device without data cable. A new version of iOS tends to be released once a year, and is normally free, although iPod touch users were formerly required to pay a small fee. Apple upgrades its products' hardware periodically (approximately yearly). There have been five generations of iPhone (iPhone Original, iPhone 3, iPhone 3GS, iPhone 4, iPhone 4S), four of iPod touch, and three of iPad (iPad, iPad 2, The new iPad). Older models of iPod touch are available at retailers at a reduced price but are no longer available on the Apple Store. Some older models of iPhone are still available at a reduced price.
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iOS is Apple Inc.'s mobile operating system
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