![This is why your mobile phone will make a loud emergency siren noise later this month in Milton Keynes This is why your mobile phone will make a loud emergency siren noise later this month in Milton Keynes](https://www.miltonkeynes.co.uk/webimg/b25lY21zOjMyYmJlZWRjLTEzMWEtNDAxMC04ZmZmLTJiNDdmODdjNGM3NTo4N2IwNzQzOS03MWEwLTQ4YTQtYTE5Zi1mYThjZWYxYzFlZGI=.jpg?width=1200&enable=upscale)
This is why your mobile phone will make a loud emergency siren noise later this month in Milton Keynes
![Sound that could save your life': UK disaster alert to buzz phones on 23 April | Emergency services | The Guardian Sound that could save your life': UK disaster alert to buzz phones on 23 April | Emergency services | The Guardian](https://i.ytimg.com/vi/ana5SN8KQf0/mqdefault.jpg)
Sound that could save your life': UK disaster alert to buzz phones on 23 April | Emergency services | The Guardian
![Three UK on X: "On Sunday 23 April at 3pm, the UK Government will be testing their emergency alert systems. Your phone will make a loud siren sound, even if it's on Three UK on X: "On Sunday 23 April at 3pm, the UK Government will be testing their emergency alert systems. Your phone will make a loud siren sound, even if it's on](https://pbs.twimg.com/media/FuJywJVWwAA4KzF.jpg)
Three UK on X: "On Sunday 23 April at 3pm, the UK Government will be testing their emergency alert systems. Your phone will make a loud siren sound, even if it's on
![Exact date and time millions of phones across the UK will blast emergency siren - will you be affected? | The Sun Exact date and time millions of phones across the UK will blast emergency siren - will you be affected? | The Sun](https://www.thesun.co.uk/wp-content/uploads/2023/04/mobile-phone-hands-girl-young-808400335.jpg)
Exact date and time millions of phones across the UK will blast emergency siren - will you be affected? | The Sun
![Siren alert tested on all mobile phones next month | News - Greatest Hits Radio (Berkshire & North Hampshire) Siren alert tested on all mobile phones next month | News - Greatest Hits Radio (Berkshire & North Hampshire)](https://cdn.apollo.audio/one/media/6416/c4b9/4192/0405/e94e/877a/jonas-leupe-wK-elt11pF0-unsplash%20(1).jpg?quality=80&format=jpg)
Siren alert tested on all mobile phones next month | News - Greatest Hits Radio (Berkshire & North Hampshire)
![This is how to opt out of the government's emergency alerts system if you're an Android or iPhone user This is how to opt out of the government's emergency alerts system if you're an Android or iPhone user](https://www.suffolknews.co.uk/_media/img/741LPJIET8EMFWTG9ZXO.jpg)