UK Emergency Alert Test Set for 7 September 2025 – What to Expect

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What’s Happening?

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Millions of mobile phones will receive a test alert via 4G and 5G networks

What Will You See & Hear?

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The system is for real dangers like severe weather or bombs. It’s already helped during Storm Éowyn and a WWII bomb find in Plymouth

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Before the test, officials will raise awareness to help vulnerable groups, like domestic abuse victims with hidden phones. A national resilience plan is also being launched to boost UK emergency readiness.

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UK Emergency Alert Test Set for 7 September 2025 – What to Expect

What’s Happening?

The UK government is conducting a second nationwide test of its Emergency Alert system on Sunday 7 September at around 3pm BST.

Millions of mobile phones will receive a test alert via 4G and 5G networks

What Will You See & Hear?

Your phone will vibrate and emit a loud siren‑like tone for about 10 seconds, even if it's on silent. A message will appear on-screen. If your device is switched off or on older 2G/3G networks, you won’t receive it

The system is for real dangers like severe weather or bombs. It’s already helped during Storm Éowyn and a WWII bomb find in Plymouth

Why Test It?

Before the test, officials will raise awareness to help vulnerable groups, like domestic abuse victims with hidden phones. A national resilience plan is also being launched to boost UK emergency readiness.

Public Info & Safety Measures

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