&gt; The US has the amber alert protocol which also has a function for the president to dispatch any message (and can only be used by the president iirc), and that level of message can&#x27;t be turned off via settings.<p>This is the Wireless Emergency Alert system, which carries Amber Alerts, Alerts about imminent threats to life&#x2F;safety, and Presidential Alerts. The last (and only the last) can&#x27;t be disabled in settings, because the legislation requiring support for the capacity required that Presidential alerts not be disabled. (The system is basically the mobile-device equivalent of the broadcast Emergency Alert System.)