Ron has an iPhone 7 and when he asks Siri to call someone, sometimes she gets it right, sometimes she doesn't because he has to unlock his phone first. Rich says that there are a couple of settings in the Siri tab that has to do with authorization and contacts. It has to do with privacy and security. He can enable "Allow Siri while locked" if the phone is locked. He can also go through the process of setting up his "Hey Siri" voice by disabling, and re-enabling Siri in Settings.