Whilst the 4S and it's smaller brother, the iPhone 4, look the same from the outside, Apple have performed some major internal designs with this latest release.
The CPU has been upgraded to a dual core A5 CPU (the same as in the iPad 2) - resulting in a dramatic increase in performance. Graphics are up to 7X faster, and Safari renders in half the time.
The 4S features both GSM and CDMA mobile radio's - increasing the coverage and usability for networks worldwide. The optics have been upgraded, and now feature an 'all-new' 8 Megapixel camera, with a larger aperture for sharper photo's, and the ability to shoot video at 1080P, utilizing stabilization via the gyro sensor.
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