How can I disable Silence Unknown Callers? Follow To disable Silence Unknown Callers: In the Settings app, navigate to: Phone > Silence Unknown Callers Disable Silence Unknown Callers. Related articles Why do I need to silence unknown callers on my iPhone? I disabled Nomorobo Max, but calls are still being silenced How can I deactivate Nomorobo Max? How can I disable Call Forwarding? How can I activate Nomorobo Max on my iPhone?