An iPhone 3GS (top) compared to an iPhone 4S (bottom). The
3GS has a semi-curved back (like the iPhone 3G), while the 4S has a flat back (like the iPhone 4).
The iPhone 4S retains almost all of the same
design features as its predecessor, the iPhone 4. The front and back are both flat, the screen
being made of glass. There is a camera on the back and the sides are stainless steel with metal buttons. It keeps the 3.5 inch
(8.89 cm) screen of past iPhones with the "home" button at the
bottom.
The iPhone 4S
comes in two colors, black and white. It is an amalgamation of a hand-held
computer, cell-phone, GPS, digital/video camera, and music player into one
device, powered by a rechargeable 1432mAh lithium-polymer battery.
A version without
a camera has been released for the Singapore Army, where cameras have been
banned from army camps since 2007. The camera-less iPhones can be purchased by
anyone, not just army corps.
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