Apple introduced its upcoming iOS at WWDC two days ago and Apple fans are thrilled by the new improvements the OS brings: revamped notification, iMessage, OTA etc. It appears that people have not even noticed other useful features due to the media cover the above mentioned apps are currently getting.
One such neglected feature is Usage which shows how much space is used by the apps installed on the iPhone and how much free space there is left. To activate it, go to Settings→ General → Usage. Usage provides a list with all the apps installed on the smartphone together and the space resources the apps are using. Each app from the list has its own menu and by accessing it users can see how much space the documents and data saved in the app are using as well as the app itself. The Usage feature also lets users delete single data saved in the app or even the app itself in order to free up space in their smartphones.
Continue Reading @ iOS 5 tells users how much space their apps are using - iPhone Forum