The nation is bracing itself for a nationwide emergency alert trial next weekend, with every mobile phone across the UK set to blare out a loud siren simultaneously. All handsets connected to 4G or 5G networks will emit the piercing alarm as part of the first test of the emergency system since 2023, with sirens sounding for up to 10 seconds to evaluate the country's preparedness for major disasters.

Residents can expect the drill to kick off precisely at 3pm on Sunday, September 7, with phones also buzzing as a text message arrives confirming the alert is merely a practice run. The warning system has been triggered five times before, with government officials sending messages to citizens in January during Storm Eowyn, issuing targeted alerts to people in Scotland and Northern Ireland abou

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