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mobile phones

$250-750 USD

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Slået op over 8 år siden

$250-750 USD

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A mobile phone (also known as a cellular phone, cell phone, hand phone, or simply a phone) is a phone that can make and receive telephone calls over a radio link while moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station. In addition to telephony, modern mobile phones also support a wide variety of other services such as text messaging, MMS, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, gaming, and photography. Mobile phones that offer these and more general computing capabilities are referred to as smartphones. The first hand-held cell phone was demonstrated by John F. Mitchell[1][2] and Martin Cooper of Motorola in 1973, using a handset weighing around 4.4 pounds (2 kg).[3] In 1983, the DynaTAC 8000x was the first to be commercially available. From 1983 to 2014, worldwide mobile phone subscriptions grew from zero to over 7 billion, penetrating 100% of the global population and reaching the bottom of the economic pyramid.[4] In 2014, the top cell phone manufacturers were Samsung, Nokia, Apple, and LG.[5]A hand-held mobile radiotelephone is an old dream of radio engineering. In 1917, Finnish inventor Eric Tigerstedt filed a patent for what he described as a "pocket-size folding telephone with a very thin carbon microphone". Among other early descriptions is one found in the 1948 science fiction novel Space Cadet by Robert Heinlein. The protagonist, who has just traveled to Colorado from his home in Iowa, receives a call from his father on a telephone in his pocket. Before leaving for earth orbit, he decides to ship the telephone home "since it was limited by its short range to the neighborhood of an earth-side [i.e. terrestrial] relay office." Ten years later, an essay by Arthur C. Clarke envisioned a "personal transceiver, so small and compact that every man carries one." Clarke wrote: "the time will come when we will be able to call a person anywhere on Earth merely by dialing a number." Such a device would also, in Clarke's vision, include means for global positioning so that "no one need ever again be lost." In his 1962 Profiles of the Future, he predicted the advent of such a device taking place in the mid-1980s.[6]Early predecessors of cellular phones included analog radio communications from ships and trains. The race to create truly portable telephone devices began after World War II, with developments taking place in many countries. The advances in mobile telephony have been traced in successive generations from the early "0G" (zeroth generation) services like the Bell System's Mobile Telephone Service and its successor, Improved Mobile Telephone Service. These "0G" systems were not cellular, supported few simultaneous calls, and were very expensive. The first handheld mobile cell phone was demonstrated by Motorola in 1973. The first commercial automated cellular network was launched in Japan by Nippon Telegraph and Telephone in 1979. In 1981, this was followed by the simultaneous launch of the Nordic Mobile Telephone (NMT) system in Denmark, Finland, Norway and Sweden.[7] Several other countries then followed in the early to mid-1980s. These first generation ("1G") systems could support far more simultaneous calls, but still used analog technology
Projekt-ID: 8386370

Om projektet

7 forslag
Projekt på afstand
Aktiv 8 år siden

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7 freelancere byder i gennemsnit $829 USD på dette job
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Thank you for viewing my profile you can check have 5***/5*** also you can check happy customer. always trying to get customer satisfaction. I have gone through your project requirement specification and as per my previous experience with this we are capable to do this project. please give a chance to proved our skill. Welcome to one of the best services available for your online needs. We provide you industry standard Mobile Apps, Software, Desktop Apps, Web Stores, Websites and Web Apps. So, you get all at one place! We can provide you the following: - iOS applications - Android applications - Software for all purposes - Desktop applications - Websites - Web applications - Ecommerce websites/ Web stores We specialize in: - Objective C, Cocoa, iOS 4, 5, 6 - Java, Google Android - WordPress, Joomla - WP Ecommerce, Magento - PHP5, PHP, MySQL - C#, C++, C - ActionScript 3.0, AIR, XML Please check reviews of our happy customers to boost your confident about us! Thanks. replay me on pm we need more discussion about your project .
$354 USD på 8 dage
5,0 (11 anmeldelser)
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2,1
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A proposal has not yet been provided
$349 USD på 7 dage
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I will provide you with a complete patent search report covering the areas of infringement and validation of the patent. After your approval, I'll prepare the claims required. After your approval of the claims, final draft will be prepared. Additionally, I can prepare either of US or Indian Patent Drafts I have written multiple software and mobile based patents. I am a patent Engineer at a company with clients from all over the globe. I have experience in writing both Indian as well as US patent applications.
$300 USD på 10 dage
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