Apple’s new iOS 9 mobile operating system contains a new feature that attempts to tell you who an unknown caller is, VentureBeat reports.

When an unknown person (or bot) calls, the OS searches through the user's email for names that might be associated with the phone number calling. When it finds a possible match, it says “Maybe [person’s name]” underneath the phone number on the screen.

This can totally change people's decision on whether to take the call. Users may have no problem talking to the person during business hours but have no desire to talk to them in the evening, for example.

Of course iOS 9 comes with all sorts of other enhancements, such as a smarter Siri personal assistant, multitasking functionality on the iPad, and new “press and hold” contextual menus on the iPhone 6s and 6s Plus. Apple is pushing iOS 9 very hard — it even launched its first Android app to help users switch.