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What is a 3G or 4G Phone?

April 11, 2009

G stands for generation. so 2G is a second generation phone and 3g third generation. They are the technical developmaents of the mobile phones for time to time .

For instance 1G phone used Analog signals . 2G were wireless and digital and 3G technology uses enhanced mobile phone standards . One can simultaneously transfer both voice data and non voice data e.g emails , sms . 3G phone are mainly known for vedio telephony .

Japan was the first country to introduce 3G technology.3G phone were introduced in Europe in 2003. As of now appox 50% of the subscribers use 3G phone . there is a transition seen from 3 to 3.5G , that is between 3G and 4G.

In terms of the spectrum (or the band width ) 1G used frm 2oohz to 3000hz.2G uses from 15 to 20 Mhz . and 3G needs a huge and width.

There are about 60 3G networks across 25 countries. In Asia , europe and the USA . telecom firms uses WCDMA technology.

This high growth in telephone technology has resulted in improving 3G to 4G. currently japanese company NTT DoCoMo and Samsung are testing 4G communications..

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