iOS is a curious systemAlthough it is true that in general we find a simple use and a pleasant user interface, when you become an expert customer things get a little more difficult, since in general lacks conventional menus to carry out maintenance tasks of the operating system, in fact, are non-existent.
If you've ever seen the text "Cleaning…" just below an icon on your iPhone do not worry, we will explain what it consists of. iOS is an intelligent system that tries to manage itself without requiring user intervention, and this is sometimes confusing.
In Android it is extremely common to find maintenance applications or "cleaners" as it is known in the geek world. However, these applications are non-existent on iOS, at least if you have not Jailbroken, since they do not have independent access to the memory of the same. In fact, iCleaner was quite a popular tool in the jailbreak environment for its remarkable performance. And that's really what happens when you find the text "Cleaning…" just below a Springboar icon on your iPhone or iPad, you are performing a task as simple as cleaning.
Ultimately, what iOS is doing is deleting temporary files and user cache, these files are numerous in applications such as Instagram, Facebook or Spotify, which occupy up to ten times more storage than necessary with intensive use. This task is more commonly performed when we perform a massive download of updates or applications from the App Store, which is when iOS understands that cleaning is most necessary. So don't worry, task execution "Cleaning…" It is the maintenance of iOS taking place, and it will actually improve the performance of the applications.