Spectrum is radio frequencies used to transmit voice, video and data. 2-G and 3-G are second generation and third generation spectrum, respectively. The fourth generation is being tested. 3-G facilitates high-end use and faster transmission of video images and data etc. 2-G spectrum is used only for voice transmission.
Spectrum and Difference between 2-G and 3-G
On February - 14 - 2012
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