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Answer Posted / prasenjit hira
In 3G networks need high bandwidth than 2G networks.
for 3g network it supports not only voice,sms and data
but also video,MMS voice call, surffing at a high speed.
where 2g and 2.5g not supports dat features, it only uses
FDM and TDM access technology.
But 3g has venture facilities of GSM and CDMA..we all know
dat CDMA is speeder than GSM. dats y this 3g gets more
bandwidth and speed.
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