Mobile Phone Technology...
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A mobile phone is an electronic device which is used for long range voice communication over a network of base stations. The current mobile phones are so advanced that they not only are used for voice communication but also provides a number of additional services like SMS which is a short message service which allows the interchange of short text messages between mobile telephone devices. Bluetooth, infrared, email, packet switching are all additional aspects used in mobile phones to transfer data. Mobile phones these days are available with cameras which not only allows you to take pictures but also to record videos, so one has to not carry an additional camera while going on a holiday. These mobile phones have been loaded with radio and a MP3 player which can be used when you are all alone. So at that time one can listen to favourite music.
Mobile phones work with the help of lithium-Polymer batteries as this being even lower weight. The batteries are charged for once as they give a back up of 15-18 hours.
There are a number of mobile phone companies those manufacture handsets like Nokia, Samsung, Sony Ericsson, Apple Inc., Benefon, BenQ Siemens, CECT, High Tech Computers, Corporation Fujitsu, NEC, Neonode, Panasonic, Palm, Matsushita, Pantech Wireless Inc., Philips, Qualcomm Inc., Research in Motion Ltd.,S pice, T&A Alcatel, Huawei, Trium, Toshiba and many other companies. The first Smartphone was the Nokia 9000 Communicator in 1996 which incorporated PDA functionality to the basic mobile phone at the time. GSM mobile phones require a small microchip, called a Subscriber Identity Module to function. The size of a sim card is very small and it usually get underneath the battery and stores the phone's configuration data, and information about the phone itself, such as which calling plan the subscriber is using.
The sim card can be removed and can be re-inserted in another handset. SIM Card is activated by use of a unique numerical identifier; once activated, the identifier is locked down and the card is permanently locked in to the activating network. Each mobile making company produces a number of handsets which allows consumers with a large range of choices to select from.
Article Source: Articlelogy.com
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