The evolution of mobile technology can be traced back as early as 1940. In the first two-way radios or mobile rigs were put into vehicles such as taxis, cruisers and ambulances and police. But no cell phones because they are not connected to the telephone network as usual. In particular, users of this early form of mobile technology can not dial a phone number from their vehicle. In the first two-way radios, mobile phones are permanently installed in the car. The models continue to do that. transportables Or "mobile" bag was created with a cigarette lighter plug so that they can perform, and can therefore be used as a mobile phone or a portable two-way radio. At the beginning of 1940, Motorola developed a two-way radio backpacked, walkie-talkie, and later established a large radio two way Phones for Soldiers United States Battery "Handie - talkie" or HT approximately the size of the forearm. Humans will soon be invented from analog Motorola DynaTAC prototype was first used in 1973 to three different versions of each mobile phone technology to improve the way. Models are classified as 1G, 2G and 3G
1G or 1 - G specifically describes the first generation of wireless technology, the mobile telecommunications. These are analog communication standards were put in place in the 1980s and continued until they were replaced. 2G Digital Telecommunications Differences between the Two Chief Systems Mobile 1G and 2G, is that radio networks that use analog 1G, 2G, while network-based digital radio
in 1990, the second generation, or 2G systems. mobile phones including GSM, iDEN IS - 136 ("TDMA") and IS - 95 or "CDMA" was introduced in 1991, first GSM network Radiolinja established in Finland 2G systems are converted from digital transmission. and utilization of modern phones and fast signaling network. For the most part, the frequencies used by 2G systems in Europe are higher than those in the United States, for example, 900 MHz frequency range used for both 1G and 2G in Europe to the 1G was immediately shut down to make by BetterPriceChec" style="border: none !important; display: inline-block !important; text-indent: 0px !important; float: none !important; font-weight: bold !important; height: auto !important; margin: 0px !important; min-height: 0px !important; min-width: 0px !important; padding: 0px !important; text-transform: uppercase !important; text-decoration: underline !important; vertical-align: baseline !important; width: auto !important; background: transparent !important;">room. for 2G systems in the United States IS - 54 is the standard used in the same way as AMPS and replace some of the existing analog channels. The allocation of 2G technology start seeing smaller, more compact mobile phones. This adjustment is enabled due to improved technology and more batteries and other electrical appliances, energy saving
SMS messaging has become a reality with the network 2G, the first GSM network on a digital network. In 1991, the message was originally built as a transmitter in the United Kingdom in 1993, which was the first actual person to person SMS text message was sent in Finland SMS soon after the introduction of it that way. The need of communication for young people. In fact, in most markets is the message you want to leave a voice message. Two models also enable users to access media content on mobile phones when Radiolinja now Elisa, in Finland the ring tone download a paid content
on the success of the 2G network of third generation or. 3G technology is intialized developing newer technologies are paving the way for a vast number of different standards to different contenders promote its own technology. Unlike 2G, 3G means of obtaining standard IMT - 2000 standard processing. This process is necessary to establish the technology. But instead of a set of requirements (2 Mbit / s data in the maximum rate, 384 kbit / s outdoors, for example) since then, for the original single unified global standards were dismantled and standards vary from. It has been suggested
experimental network first before commercial use of 3G technology was launched by NTT DoCoMo in Japan in Tokyo in May 2001 by the end of 2007. There are 295 million 3G networks around the world, which represents 9%. the number of people using mobile phones.
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