I recently installed the app 'Empty Folder Cleaner' from playstore. On running the app, I noticed that the majority of empty folders removed were from the parent folder called iSMS, in my external SD Card. Inside the parent folder, the empty folders were images, videos, etc. Does anyone have any idea regarding that? Is it some sort of a mischievous thing?
P.S - I'm running on Android 4.2.2(rooted), Sony Xperia C2305.