President Donald Trump, via the Federal Emergency Management Agency, will send out an alert to phones across the nation Wednesday afternoon in the first-ever test of the presidential emergency alert system. Advertisement All modern cell phones that have signal should receive the alert, including an audible tone and buzzing, at 2:18 PM EST, and there is no way to opt out (you can turn your phone off, of course, but the alert will come through when you power it on again).

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