Australians are being warned not to panic when their phones suddenly and simultaneously sound a loud emergency siren later this month, as testing ramps up on a new national disaster warning system.
What to Expect on July 27
Every compatible mobile phone, smartwatch and Android tablet connected to an active 4G or 5G network is expected to sound a 10-second-long alert as part of the Federal Government’s nationwide trial of AusAlert. The test warning is scheduled to happen about noon (AWST) on Monday, July 27. Officials warn the alert will not be subtle, with a loud siren sound designed to prepare Australians for a new era of emergency warnings ahead of AusAlert’s official launch in October.
How AusAlert Works
Unlike SMS emergency messages, AusAlert uses cell broadcast technology, which allows authorities to instantly send warnings to everyone in an affected area during life-threatening emergencies. The system will be used to warn people about security threats, biosecurity incidents, bushfires, floods, cyclones, tsunamis, public health emergencies and security threats. The alerts will sound even on phones without a SIM card, and on devices set to “Do Not Disturb” or silent mode. The system works across all major Australian telecommunications providers, including Telstra, Optus and Vodafone, and does not require people to sign up or download an app.
Compatible Devices
The National Emergency Management Agency said compatible devices include: iPhone 11 and newer running iOS 26.4 or later; Apple Watch SE2, SE3 and Series 6 or newer running watchOS 26.4 or later; and Android devices running Android 12 or later. Older phones may also receive alerts depending on their capabilities, but AusAlerts will not occur on Apple iPads. Officials urge Australians to ensure their phone is updated with the latest software before the national test. The government is also continuing to test how the system will work with hearing aids, cochlear implants and refreshable braille displays.
Safety Advice During the Test
If you are driving or riding when the alert goes off, the advice is to “stay calm” and don’t touch your phone. Mobile phone laws still apply. For more information, visit the NEMA website.
