Don't Panic: UK Phones To Sound At Once In Emergency Drill

Millions of phones will all blare at once on Sunday across the UK as the government tests a national emergency drill (Credit: AFP)

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

The nationwide test comes as officials seek to strengthen the country's resilience amid more frequent extreme weather events and concerns around Russia's war in Ukraine.