Phones across the country will issue “emergency alerts” as part of a nationwide test, the government has said.
The test could lead devices to make a “loud siren-like sound” and vibrate for up to 10 seconds as part of a new government safety feature.
The tests are part of a government system with the idea of issuing warnings about potential dangers or threats to life by sending out 'emergency alerts' directly to people’s phones.
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The system is set to launch in summer 2021, according to the UK’s website.
A spokesperson from the government said: "Your phone or tablet may make a loud siren-like sound, even if it’s set on silent, vibrate and read out the alert
"The sound and vibration will last for about 10 seconds.
"Stop what you’re doing and follow the instructions in the alert."
The reasons an alert may be sent out include: severe flooding, fires, explosions, terrorist incidents and public health emergencies.
Emergency alerts are broadcast from mobile phone masts and will see every compatible mobile phone or tablet in range receive an alert.
Before the alerts are rolled out nationally, the system is being tested on June 22 the government has warned.
Between 1pm and 2pm there is a “small chance” Android users could get an alert during the timeframe.
The message that is sent to users will make clear the alert is being sent out as a test.
Users can opt out of some of the emergency alerts, including the tests, though the “most important ones” will still be pushed through, according to the government.
The government stresses that people should keep them switched on “for your own safety”.
They can be switched off by going into your devices settings, finding the “emergency alerts” options and turning of “severe alerts”.
