- 問題詳情:Third-generationmobilephones,knownas3G,arethenextbigstepforthetelecomindustry.Dataspeedin3Gnetworksismuchquickerthanthatinpresenttechnology.Thismeansuserscanhavehigh-speedInternetaccessandenjoyvideoandCD-qualitymusicontheirphones.“Mobiledata...
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