National Emergency Alerts Alarm system test
All Smart Phones South Brent, Devon, United KingdomSunday 23 April 2023: National Alarm Test at 3pm. The Government plans to test the National Emergency Alerts Alarm system by sending a national test alarm - a siren and vibration, lasting for up to 10 seconds, to all smartphones that use 4G and 5G phone networks (older, ‘non-smart’ phones will not receive the alarm).…