Australia’s AusAlert System Tested Monday: What You Need to Know

Australia’s federal government tested its new AusAlert emergency warning system on Monday, July 27, sending a 10-second siren to millions of compatible mobile devices nationwide. The alert sounded at 2pm AEST in New South Wales, Victoria, Queensland, Tasmania, and the Australian Capital Territory, 1:30pm ACST in South Australia and the Northern Territory, and 12pm AWST in Western Australia. The system is designed to deliver targeted emergency alerts without relying on any single telecommunications provider and will launch nationally in October.

How the test worked and what people heard

The AusAlert test sent an identical alert to all compatible mobile devices across Australia simultaneously, adjusted for each timezone. Devices vibrated and played a siren-like warning sound for approximately 10 seconds. The alert appeared on screen with the message “AusAlert” on newer devices, though some older phones displayed it as “Presidential Alert” or “Extreme Threat Alert” instead. The test siren sounded even if phones were set to silent or do-not-disturb mode.

Why some phones did not receive the alert

Not all devices received the test notification. Older phones, devices with incompatible operating systems, phones without recent software updates, and devices without mobile signal could not receive the alert. Some users reported receiving multiple alerts within minutes of each other, while others heard nothing despite having compatible devices. The system sent alerts to most phones and some smartwatches and tablets, but international phones with e-SIM only technology sometimes failed to connect.

Safety concerns for domestic violence survivors

Advocacy groups raised concerns that the loud alert could pose risks to domestic violence survivors with hidden phones. Emergency Services Minister Kristy McBain worked with domestic violence services to provide safety guidance. People who did not want their device to receive the alarm were advised to put it in aeroplane mode at least one hour before the test and keep it in that mode for up to 24 hours. Drivers were urged not to touch their phones when the alert sounded, as mobile phone laws still apply while driving.

Why Australia built AusAlert and what comes next

AusAlert was created to replace the current emergency warning system, which relies on individual telecommunications providers and is subject to network congestion. The new system does not depend on any single telco provider and can geolocate alerts to within 160 metres of an incident. Minister McBain stated the system is more accurate than the current system. Despite concerns raised at state and territory level, AusAlert is set to launch nationally in October 2026.

Final Thoughts

The Monday test confirmed AusAlert can reach millions of devices simultaneously across Australia. With the system launching in October, the federal government has demonstrated its ability to deliver emergency warnings independent of telco outages that have disrupted triple-zero access in recent months.

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