Why 10-second sirens will sound on our phones this year
A 10-second siren will sound on millions of mobile phones across the country (Yui Mok/PA) (PA Archive)
The UK government will conduct an "emergency alert" system test this year, sounding a 10-second siren on millions of mobile phones across the country.
This test, in line with Covid inquiry recommendations, aims to warn the public about severe emergencies such as flooding, fires, and extreme weather.
Alerts will appear on phone home screens, vibrate, and emit siren-like beeps, requiring user acknowledgment before other phone features can be accessed.
The system, launched in 2023, is sent by emergency services and government departments, reaching an estimated 90 percent of mobile phones via 4G and 5G networks.
While the exact date is unconfirmed, this will be the last test of 2025, with subsequent tests planned every two years; users have the option to turn off the feature.