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17 Apr 2013

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The S4 (left) looks almost identical to its predecessor, the Galaxy S3.

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The camera on the back of the S4 (camera) is noticeably larger and Samsung has moved the position of the flash

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Holding down the back button brings up a list of apps which can be used in split screen mode

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Simply tap on the apps you want to use together for multitasking. Here we used the Gmail app and the web browser

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Samsung has modified Android Jelly Bean. Swiping down from the screen with two fingers brings up a number of quick settings

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Image quality on the S4's 5in screen looks superb. The device packs 1920 x 1080 resolution and 441ppi