Third-generationmobilephones,knownas3G,arethenextbigste...
问题详情:Third-generationmobilephones,knownas3G,arethenextbigstepforthetelecomindustry.Dataspeedin3Gnetworksismuchquickerthanthatinpresenttechnology.Thismeansuserscanhavehigh-speedInternetaccessandenjo...