72K views · 587 reactions |  At 3pm this Sunday there will be a test of the Emergency Alerts system. People will receive the test message on the home screen of their mobile phone, along with a sound and vibration for up to ten seconds. ❗️The system is designed to warn people when their lives are in danger. To find out more about the planned upcoming test visit: gov.uk/alerts This is what to expect ⬇️ | UK Government | Facebook