Emergency Alerts test in September

On Sunday 7 September at 3pm, the UK government will test the Emergency Alerts system.

This system warns you via your mobile or tablet if there's a life-threatening emergency nearby.

The test will be sent to all compatible 4G and 5G mobile phones and tablets across the UK. You will hear a loud siren-like sound, vibration, and a message will appear on the screen.

The sound and vibration will last for about 10 seconds. You do not need to take any action.