5.RAM manager: Display the amount of Random Access Memory (RAM) currently in use. Touch Clear memory to clear inactive and background processes.
6.Storage: View internal (System storage) and external (SD card) storage memory statistics.
Tip: To open applications quickly, add the icons of frequently- used applications to one of the Home screens, if it is not there by default. For more information, refer to “Adding a Shortcut or Widget” on page 32.
Application Folders
There are several applications that are grouped into different folders. The applications in this section are described alphabetically. The following folders contain the applications listed below:
Samsung: Alarm, Calculator, Downloads, Help, KNOX, S Voice, SideSync 3.0, and World Clock.
Google: Drive, Gmail, Google, Google Settings, Google+, Hangouts, Photos, Play Books, Play Games,
Play Movies & TV, Play Music, Play Newsstand, and Voice Search.