To turn this feature on, simply go to Settings > Phone > Silence Unknown Callers. Once activated, only known and trusted numbers will ring through. The rest will be recorded in your voicemail and call log, so you don’t lose the ability to follow up if it turns out to be an important but unfamiliar number. Additionally, iPhone’s Visual Voicemail and voicemail-to-text transcription let you quickly scan any messages left behind without needing to listen to them manually, saving time and reducing stress.
