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2G, 3G, 4G, and everything in between: an Engadget wireless primer
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日期：2025-10-06
17 Jan 2011 ... 2G, 3G, 4G, and everything in between: an Engadget wireless primer ... Just what
is "4G," anyway? It's one .... In addition to the aforementioned speed
requirements, the ITU's official 3G ......看更多
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