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Concept
Form factor (mobile phones)
Summary
The form factor of a mobile phone is its size, shape, and style, as well as the layout and position of its major components.
A bar (also known as a slab, block, candybar) phone takes the shape of a cuboid, usually with rounded corners and/or edges. The name is derived from the rough resemblance to a chocolate bar in size and shape. This form factor is widely used by a variety of manufacturers, such as Nokia and Sony Ericsson. Bar-type smartphones commonly have the screen and keypad on a single face. Sony had a well-known 'Mars Bar' phone model CM-H333 in 1993 that was longer and thinner than the typical bar phone. Bar phones without a full keyboard tend to have a 3×4 numerical keypad; text is often generated on such systems using the Text on 9 keys algorithm.
These are variants of bars that have a full QWERTY keyboard on the front. While they are technically the same as a regular bar phone, the keyboard and all the buttons make them look significantly different. Devices like these were popular in the mid to late 2000s, but lost popularity afterward. The BlackBerry line from Research In Motion (RIM) was particularly popular and influential in this category.
"Brick" is a slang term used to refer to large, outdated rectangular phones, typically early devices with large batteries and electronics. These early phones, such as the Motorola DynaTAC, have been displaced by newer smaller models which offer greater portability thanks to smaller antennas and slimmer battery packs.
However, "brick" has more recently been applied to older phone models in general, including non-bar form factors (flip, slider, swivel, etc.), and even early touchscreen phones as well, due to their size and relative lack of functionality compared to current models on the market.
The term "brick" has also expanded beyond smartphones to include most non-working consumer electronics, including a game console, router, or other device, that, due to a serious misconfiguration, corrupted firmware, or a hardware problem, can no longer function, hence, is as technologically useful as a brick.
Official source
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