FEMA WEA: Why your iPhone’s alarm just went off

Macworld
In the U.S., the Federal Emergency Management Agency (FEMA) works with the Federal Communications Commission (FCC) on the Integrated Public Alert & Warning System (IPAWS). IPAWS is used to alert anyone using a mobile phone with a U.S. cell provider of emergency situations through mobile phones, radios, and television.Have you ever been watching TV, and then suddenly you see an alert graphic on the screen, and hear a long tone, followed by a voice saying, “This is a test. This