What is the internal storage being used for? My Android phone is showing me a notification saying that the "Phone storage is low". So, when I click on the notification, it shows me this:



The total space used is 6.59 GB, but the space used by the apps (which, I suppose, include cache and data as well as the application binaries). So what is using the other 6 GB!?

Android version: 4.2.2
Manufacturer: HTC
...or you can go to android settings for free and select storage option and see which category takes most of your space. If you want to clean your cached files (you can do it directly from storage screen, just click on Cached data category), I recommend ES Task Manager, its free and in the combination with ES File Explorer he's best option, at least for me.