Mobile phones: Compare features & prices Apple iPhone 3GS 8GB review http://www.which.co.uk/technology/phones/reviews/mobile-phones/apple-iphone-3gs-8gb/review/
After its US launch in July 2007, Apple's iPhone mobile phone became a runaway success. Apple says its updated version, the iPhone 3GS, offers even quicker internet downloads, a better camera and battery life, and lots more storage for MP3, video and photo files. We put it through our tough mobile phone lab tests to see if these claims were true.
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Display resolution
The number of pixels the screen displays (horizontal x vertical). Information provided by manufacturer.
3G
3G phones can access the web at faster speeds and can make video-calls.
3.5mm headphone socket
A 3.5mm socket enables you to use a set of regular headphones rather than those supplied with the phone.

