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UK Mobile Phones Blare In National Emergency Test

The system is designed for use during the most likely emergencies to affect Britain, where there is the possibility of a loss of life.


An Emergency Alert is shown on the screens of smartphones of spectators during the third One Day International (ODI) cricket match between England and South Africa at the Utilita Bowl cricket ground, in Southampton, on the south coast of England, on September 7, 2025. (Photo by JUSTIN TALLIS / AFP)

 

Millions of mobile phones across the UK blared a siren sound at the same time on Sunday as part of government efforts to better prepare for national emergencies.

The nationwide drill caused England’s third ODI cricket match against South Africa to be paused while kick-off for a rugby league match was pushed back to avoid disruption.

At 3 pm (1400 GMT), phones and tablets emitted the noise and vibrated for about 10 seconds, while users also received a message saying it was just a test.

It was only the second test of the country’s national emergency alert system following the first in 2023.

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The government had, in recent weeks, embarked on a publicity drive to minimise any shock caused, including through announcements at rail stations and signs on motorways.

 

A screen shows information relating to an Emergency Alert test that was sent to smart phones, during the Women’s Rugby World Cup pool C match between New Zealand and Ireland at York Community Stadium, Brighton & Hove Albion Stadium, Brighton, southeast England, on September 7, 2025. (Photo by Glyn KIRK / AFP)

 

It has used the system to issue real warnings to local areas five times in the past two years.

In January, some 4.5 million people in Scotland and Northern Ireland received an alert during Storm Eowyn after a red weather warning was issued, meaning there was a risk to life.

A 500-kilogramme (1,100-pound) unexploded Second World War bomb found in a back garden in southwest England triggered a warning to some 50,000 phones in February last year.

The system is designed for use during the most likely emergencies to affect Britain, where there is the possibility of a loss of life.

Warnings would also be transmitted on television, radio and where appropriate by knocking on doors.

Similar alerts are issued in the United States and Japan.

Only devices connected to 4G or 5G networks received Sunday’s alert.

 

An Emergency Alert is shown on the screen of a smartphone in York on September 7, 2025. (Photo by Paul ELLIS / AFP)

 

It came as officials seek to strengthen the country’s resilience amid more frequent extreme weather events and concerns around Russia’s war in Ukraine.

The government published a “Resilience Action Plan” in July, which also cited the upheaval of the coronavirus pandemic, US President Donald Trump’s tariffs, and cyber attacks.

 

AFP