我的手机是三普JK5907,内存卡里文件夹是什么意思?@java,@piaylists,answermachine,df2rooieasyfone,ej_app,fontsgod,iflytek,mcarelog,mef,mp3_res,MyDocuments,Otherfiles,Others,private,ProgramFiles,QQBrowser,Sounds,Speech,store3_0,tcstore3_0,UUPHOTO,vCard,VGMUSIC,VRE,zhangyue,zmol,这些文件都有什么作用?
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