Will my phone ring if I get a call from a number on RoboKiller's blacklist?

Your phone will NOT ring if you get a call from a number on RoboKiller’s blacklist. The app uses push notifications to notify you when we have blocked a call on your behalf, so you can be informed about who called. (Note: Depending on your phone, you may, however, see a very brief flash of the phone screen as the call is forwarded to RoboKiller).