2G

adj. of or pertaining to second generation wireless technology

second generation wireless technology, PCS

2G (or 2-G) is short for second-generation wireless telephone technology.The main differentiator to previous mobile telephone systems, retrospectively dubbed 1G, is that the radio signals that 1G networks use are analog, while 2G networks are digital. Both systems use digital signaling to connect the radio towers (which listen to the handsets) to the rest of the telephone system.
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