Siren sounds have blared from mobile phones across the country in a test of the national emergency alert system. At around 15:00 on Sunday, mobiles vibrated and sounded for about 10 seconds in the ...

A 10-second 'Armageddon alert' siren will sound on millions of UK mobile phones at some point this year as part of a test of the government's emergency alert system. The alert, for which a date hasn't ...

Cell phones across Houston will ping with an Amber Alert-style warning at 11 a.m. Friday as city officials test the emergency messaging system. "This (wireless emergency alert) message would be for a ...