tag:blogger.com,1999:blog-1234022853662694042024-09-05T04:11:07.089-07:00De MobileAnonymoushttp://www.blogger.com/profile/14376640606753915985noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-123402285366269404.post-90011089427052601502011-08-23T11:44:00.000-07:002011-08-23T11:44:02.651-07:00De Job<div dir="ltr" style="text-align: left;" trbidi="on"><span class="Apple-style-span" style="background-color: white; font-family: sans-serif; font-size: 13px; line-height: 19px;"></span><br />
<div style="line-height: 1.5em; margin-bottom: 0.5em; margin-top: 0.4em;">A <b>mobile phone</b>, <b>cellular "cell" phone</b> or <b>hand phone</b> is a mobile electronic device used to make <a class="mw-redirect" href="http://en.wikipedia.org/wiki/Mobile_telecommunications" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Mobile telecommunications">mobile telephone calls</a> across a wide geographic area, served by many public <a href="http://en.wikipedia.org/wiki/Cellular_network" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Cellular network">cells</a>. By contrast, a <a href="http://en.wikipedia.org/wiki/Cordless_telephone" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Cordless telephone">cordless telephone</a> is used only within the range of a single, private <a href="http://en.wikipedia.org/wiki/Base_station" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Base station">base station</a>.</div><div style="line-height: 1.5em; margin-bottom: 0.5em; margin-top: 0.4em;">A mobile phone can make and receive telephone calls to and from the <a class="mw-redirect" href="http://en.wikipedia.org/wiki/PSTN" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="PSTN">public telephone network</a>which includes other mobiles and <a class="mw-redirect" href="http://en.wikipedia.org/wiki/Fixed-line" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Fixed-line">fixed-line</a> phones across the world. It does this by connecting to a cellular network provided by a <a href="http://en.wikipedia.org/wiki/Mobile_network_operator" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Mobile network operator">mobile network operator</a>.</div><div style="line-height: 1.5em; margin-bottom: 0.5em; margin-top: 0.4em;">In addition to telephony, modern mobile phones also support a wide variety of other <a href="http://en.wikipedia.org/wiki/GSM_services" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="GSM services">services</a> such as <a href="http://en.wikipedia.org/wiki/Text_messaging" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Text messaging">text messaging</a>, <a href="http://en.wikipedia.org/wiki/Multimedia_Messaging_Service" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Multimedia Messaging Service">MMS</a>, email, Internet access, short-range wireless communications (<a href="http://en.wikipedia.org/wiki/Infrared_port" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Infrared port">infrared</a>,<a href="http://en.wikipedia.org/wiki/Bluetooth" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Bluetooth">Bluetooth</a>), business applications, gaming and photography. Mobile phones that offer these more general computing capabilities are referred to as <a href="http://en.wikipedia.org/wiki/Smartphone" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Smartphone">smartphones</a>.</div><div style="line-height: 1.5em; margin-bottom: 0.5em; margin-top: 0.4em;">The first hand-held mobile phone was demonstrated by <a href="http://en.wikipedia.org/wiki/Martin_Cooper_(inventor)" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Martin Cooper (inventor)">Dr Martin Cooper</a> of <a href="http://en.wikipedia.org/wiki/Motorola" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Motorola">Motorola</a> in 1973, using a handset weighing 2 kg.<sup class="reference" id="cite_ref-Inventer_0-0" style="font-style: normal; line-height: 1em;"><a href="http://en.wikipedia.org/wiki/Mobile_phone#cite_note-Inventer-0" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;"><span>[</span>1<span>]</span></a></sup> In 1983, the <a href="http://en.wikipedia.org/wiki/Motorola_DynaTAC" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Motorola DynaTAC">DynaTAC 8000x</a> was the first to be commercially available. In the twenty years from 1990 to 2010, worldwide mobile phone subscriptions grew from 12.4 million to over 4.6 billion, penetrating the <a href="http://en.wikipedia.org/wiki/Information_and_communication_technologies_for_development" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Information and communication technologies for development">developing economies</a> and reaching the <a href="http://en.wikipedia.org/wiki/Bottom_of_the_pyramid" style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;" title="Bottom of the pyramid">bottom of the economic pyramid</a></div></div>Anonymoushttp://www.blogger.com/profile/14376640606753915985noreply@blogger.com0