'I have an iPhone 5, though it is a little old, but it still works fine. However, recently, it notifies lack of storage frequently. Actually, I did not install many apps on my iPhone 5, and one of my friends suggests me to clear cache data for iOS to free up space. I know that iPhone does not have such feature, is there any iPhone cleaning app? Please help.'Ifreeup Iphone CleanerIfreeup Iphone C..