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A mobile phone is a device which behaves as a normal telephone whilst being able to move over a wide area (cf. cordless phone which acts as a telephone only within a limited range). Mobile phones allow connections to be
made to the telephone network,
normally by directly dialling the other party's number on an inbuilt keypad. Most current mobile phones use a combination of
radio wave transmission and conventional telephone
circuit switching, though packet switching is already in use for some parts of the mobile phone network, especially for services
such as internet access and WAP.
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