请问iCleaner清除message那个选项中
smart 和 on 差在哪里？
Message attachments (disabled by default):
it deletes files sent and received via iMessage or MMS.
The "smart" setting only deletes files that do not show up in any message
, while "on" deletes all attachments (messages with attachments will show
a blank icon).
on就是把所以附件移除
smart的意思是删除没有出现的档案吗？这我不太懂