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What is difference between 2G, 3G and 4G

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What is difference between 2G,3G and 4G

posted Apr 18, 2018 by Vishnu Vardhan Reddy

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1 Answer

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G means generation.

2G is migration from analog to digita and supports only voice (Those could do data but only as analog modem (using the whole channel) at 9.6Kbps)
Technology: GSM, D-AMPS, PDC

2.5G added dedicated digital data (GPRS)

3G is all digital with the support of data but still circuit switched
Technology: UMTS / WCDMA, EvDO

3.5G faster data, added true always-on / packet data (HSPA) with data rates of 2Mbps of Mbps

4G wireless broadband with Pure data: voice as VoIP
Technology: OFDMA (LTE & WiMAX) with data rate 10 Mbps - 100 Mbps

4.5G term not widely used but some people say that is LTE-Advanced

5G: not yet defined

answer Apr 22, 2018 by Salil Agrawal
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