BBC Information & know-how reporters
The nationwide system for sending emergency alerts to cell phones within the UK shall be examined once more this September, the federal government has mentioned.
It can see suitable telephones vibrate and make a siren sound for 10 seconds whereas displaying a message at 15:00 BST on 7 September, even when they’re set to silent.
The alerts are supposed for conditions in which there’s an imminent hazard to life, equivalent to excessive climate occasions or throughout a terror assault.
Although the system has been deployed regionally 5 occasions previously few years, a earlier nationwide check in 2023 revealed technical points – with some folks receiving the alert sooner than anticipated and a few not receiving it in any respect.
Many on the Three community didn’t get something, together with customers on different networks – whereas some obtained a number of alerts. The federal government later mentioned the message didn’t attain round 7% of suitable gadgets.
The Cupboard Workplace mentioned on the time that the issues uncovered could be reviewed and addressed forward of one other check.
It mentioned September’s check was supposed to make sure the system labored properly and to verify folks have been acquainted with the alerts, in keeping with different nations that additionally use them, just like the US and Japan.
Of the roughly 87 million cell phones within the UK, the alert will solely seem on smartphones on 4G or 5G networks. Older telephones, and telephones linked to 2G or 3G networks, won’t obtain the message.
Cupboard Workplace minister Pat McFadden mentioned: “Similar to the fireplace alarm in your own home, it is necessary we check the system in order that we all know it’ll work if we want it.”
Addressing MPs within the Home of Commons on Tuesday, McFadden mentioned the alert system “will play a essential position in ensuring that we’re prepared for all types of future emergencies”.
However some MPs highlighted considerations that textual content alerts and net info may fail to succeed in some residents.
Liberal Democrat MP Sarah Olney mentioned they may miss “tens of millions of individuals – folks with out telephones, with out sign, with out battery”.
Stafford MP Leigh Ingham in the meantime requested the federal government for assurances that the alert would attain rural constituents.
McFadden mentioned roughly 95% of the UK inhabitants is roofed by 4G or 5G entry, and the federal government is working “continually” with telecom suppliers to enhance it.
PA MediaThe system was used to ship alerts to 4.5 million telephones in Scotland and Northern Eire throughout Storm Eowyn in January 2025, and three.5 million in England and Wales throughout Storm Darragh the earlier month.
It was additionally used to help the evacuation of greater than 10,000 residents in Plymouth as an unexploded 500kg World Battle Two bomb was rigorously eliminated and brought out to sea to be detonated after being uncovered.
Tracey Lee, chief govt of Plymouth Metropolis Council, mentioned it had been an “invaluable device” and offered residents with “clear info at a essential second”.
Whereas gadgets that aren’t linked to cell information or wi-fi will nonetheless obtain the alert, these which can be switched off or in airplane mode won’t.
Home abuse charities beforehand warned the system may endanger victims by probably alerting an abuser to a hidden cellphone. The Nationwide Centre for Home Violence suggested folks with hid telephones to show them off at some stage in the check.
The federal government stresses that emergency alerts ought to stay switched on, however has revealed a information for home abuse victims on find out how to decide out.
A public info marketing campaign shall be run forward of the check to inform folks that it shall be going down.
Communications shall be focused at weak teams, equivalent to victims of home abuse, and merchandise in British Signal Language will even be used within the marketing campaign.
