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5G(1) The fifth generation of a product. For example, see Video iPod and 802.11ac.
(2) The fifth generation of cellular service, superseding 4G LTE. Expected in the 2018-2020 time frame, 5G will increase transmission speed dramatically and embrace prioritization. As wireless data increases exponentially, real-time content such as video calling must be given a higher priority than Web pages. See cellular generations.