Millions of people across the UK could receive an emergency phone alarm as the Government tests a new alert system later today.
The emergency alerts are run by the Government and will warn you if there's a danger to life nearby.
Some mobile phone networks in the UK are testing emergency alerts between 1pm and 2pm.
If you have an Android device, there’s a small chance you may get a test alert. Your device may make a loud siren-like sound.
The alert will say:
This is a mobile network operator test of the Emergency Alerts service. You do not need to take any action. To find out more, search for gov.uk/alerts