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Second Generation Mobile Phones
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An important feature of the modern urban lifestyle, Mobile Telephony is all about changes and technological advances. A further enhancement to the 1G Mobile Phones, the Second Generation Mobile Phones shows that there were different phases in the ambit of Mobile technology. In a strive to improve the quality of communication through mobile phones, the Second Generation Mobile Phones used certain different mechanisms although the technology was not totally uprooted.
The basic difference between the Second Generation Mobile Phones and their predecessor the First Generation Mobile Phones is that instead of the analog networks, these advanced versions of Mobile phones adopt the system of digital signaling in order to establish a connection between the radio towers. Started mainly in the early 90’s, the very first technologies used in the Second Generation Mobile Phones were GSM, CDMA, iDEN and IS-136. More or less the frequencies used by Second Generation Mobile Phones were much higher than the 1G Phones and this prevailed every where in the world.
IS-54 was the frequency standard deployed for the 2G Mobile phones in America. The main corner stones of the Second Generation Mobile Phones were digital circuit and the use of advanced and fast phone to network signaling. Another trait of this
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technology was that the size of the Cell Phones underwent changes. From huge and robust handsets, these Second Generation Mobile Phones were much slimmer in their look and of course easy to be carried, the batteries used were not only advanced but much more energy-efficient.
On the basis of technologies, the major divisions in the Second Generation Mobile Phones are those belonging to TDMA-based and CDMA-based standards. The GSM technology belonging to TDMA is the most widely used technology across the world and was first started in Finland. Among the CDMA-based technologies some are used in America and some parts of Asia. Although the Second Generation Mobile Phones are a step forward to the 1G phone, they still lack some technical edge and have been developed further.
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