How to display Network Activity indicator

I’m working on several projects that work on iOS with visible status bar and download pictures or other files from the web via WWW. I noticed that no networkActivityIndicator is shown while files are being downloaded. Does Unity have the functionality to show that indicator in the iOS status bar?

No, unity has no such functionality.

You would either need to write an own plugin to do so or check if Prime31 ecetera or ecetara offer it.

but keep in mind that games normally hide the status bar completely and instead show other forms of activity indicators and you might want to make use of that yourself.