回答
1.iPhone与电脑连接打PC端91助手2.点击文件管理进入目录/System/Library/Frameworks/MediaToolbox.framework/3.删除或重命名文件RegionalSystemSoundsThatShareBehaviour.plist建议:要删除文件RegionalSystemSoundsThatShareBehaviour.plist重命名Regionalsystemsoundthatsharebehavioir.plist.bak即(要其文件扩展名plist)