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Story summary
- On September 7, 2025, the UK government tested its emergency alert system, activating millions of phones for 10 seconds.
- The test aimed to verify the system's readiness for life-threatening emergencies like extreme weather and terrorism.
- Some devices missed the alert due to limitations, including older models and lack of 4G or 5G connectivity.
- This drill follows past tests and real alerts, including evacuations for a wartime bomb in February 2024.
- The government stresses that regular testing is vital for public safety.
