**Millions in the UK to Receive Nationwide Emergency Alert Test This September**
An extensive test of the UK Government’s emergency alert system is scheduled for Sunday, 7 September, and is set to affect nearly all mobile phone users across the country. At approximately 3pm, tens of millions of mobile devices connected to 4G and 5G networks will emit a sharp, unfamiliar siren noise, vibrate, and display a message on their screens. Officials state that the trial is crucial to ensure the alert service functions effectively in the event of a real emergency.
The government estimates that up to 87 million mobile phones might receive this alert simultaneously. The warning is designed to last around ten seconds and will be accompanied by a textual instruction explaining the emergency—though for this test, recipients are simply advised to carry on as normal once the alarm ends.
This system has been launched as part of national efforts to better inform the public of urgent dangers, ranging from severe weather and flooding to more rare threats. While the alert itself is harmless and can simply be dismissed, it will come as a surprise to many, particularly as it is different to typical phone notifications.
Guidance has been issued for three specific vulnerable groups who should pay special attention to the upcoming test: motorists, those with phones kept hidden for personal safety reasons (for example, people at risk of domestic abuse), and those with sensory impairments. Authorities emphasise safety and privacy considerations for each group.
For individuals at risk of domestic abuse who may own concealed devices, the government provides clear instructions on how they can opt out of receiving these alerts. On most iPhone and Android devices, users are able to locate this option within their phone’s settings by searching for ‘emergency alerts’ and switching off both ‘severe alerts’ and ‘extreme alerts’. Those using different brands or software should seek out device-specific advice, which is readily available on the Gov.uk website.
It is important to note that devices will still sound the alert even if the phone is only connected to a mobile network but not currently using data or WiFi. However, any phone or tablet turned off, on 2G or 3G only, or set to receive WiFi only will not receive the broadcast. This could particularly affect those relying on older devices.
For drivers, the advice is unequivocal: do not attempt to interact with your phone during the alert if you are driving. The government reminds motorists that using a hand-held device while behind the wheel is illegal, and anyone wishing to check the message should wait until they have stopped in a safe and legal place.
Special consideration has been given to individuals who are deaf, hard of hearing, blind, or partially sighted. The government has assured that, provided accessibility features are enabled on their devices, these users will receive audio and vibration notifications. Additionally, officials continue to collaborate with disability charities and advocates to ensure the alerts are accessible and effective.
This large-scale test is part of the government’s commitment to maintaining a robust, efficient alert system that can be activated in genuine emergencies. Since beginning trials in 2023, five real-life alerts have been sent out, including one for severe weather triggered during Storm Éowyn, where areas facing life-threatening risks were promptly notified.
Chancellor of the Duchy of Lancaster, Pat McFadden, highlighted the significance of the exercise, saying: “Just like the fire alarm in your house, it’s important we test this system so we know it will work if we need it. The alerts have the potential to save lives.”
As the test draws closer, government departments will continue awareness campaigns to inform and reassure the public, particularly those in the highlighted vulnerable groups. The trial will give both the authorities and the public an opportunity to familiarise themselves with the emergency alert process, strengthening preparedness for future crises.
Further information about the emergency alert test, including opt-out instructions and details for those using accessibility features, can be found on the official Gov.uk website.