iPhone 4S

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iPhone 4S

Despite rumors of a radically redesigned iPhone 5, Apple chose to debut the iPhone 4S with the same design characteristics of its predecessor, the iPhone 4.

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Siri

The most talked-about feature of the iPhone 4S is Siri, a "digital assistant" that responds vocally to spoken questions such as, "What's the weather like in Los Angeles tomorrow?"

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Camera

Apple also included an 8-megapixel camera as part of the iPhone 4S hardware package.

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Notifications

The Notifications app consolidates the user's communications into a single interface.

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iMessage

Apple's answer to BlackBerry Messenger, the iMessage app allows iOS 5 users to send unlimited messages to each other.

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Twitter

Apple has deeply baked Twitter into the iOS 5 user interface, allowing users to Tweet directly from Safari, the camera, maps and other features.

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iCloud

Apple's iCloud service, launching as part of iOS 5, stores Apple users' content and shares it between their devices.

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A5 Chip

Apple's proprietary A5 chip represents a processor upgrade for the iPhone franchise.

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Video Editing

The iPhone 4S records video in 1080p, with a built-in editing function.

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Retina Display

The iPhone 4S also retains iPhone 4 features such as the high-resolution Retina display.

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