Come Monday 27 July 2026, mobile phones across Australia are set to erupt in a chorus of sirens as part of a nationwide test of the AusAlert emergency warning system, ahead of its October 2026 launch. Here’s a rundown of what’s actually going to happen, and what — if anything — you need to do about it.
The test lands at a set local time across all states and territories. NSW, Victoria, Queensland, Tasmania and the ACT will get the alert at 2:00 pm AEST. The Northern Territory and South Australia, including Broken Hill, follow at 1:30 pm ACST. Western Australia gets it earliest, at 12:00 pm AWST. When it hits, expect roughly ten seconds of vibration and a siren-like sound, along with an on-screen message that makes it obvious this is only a test. A handful of older phones or those running non-standard software might label it differently, perhaps as a “Presidential Alert,” but the substance is the same regardless of the heading.
If your phone goes off, there’s genuinely nothing to do. Just let it run its course. In a real emergency, the same system would tell you what kind of danger you’re facing, where it is, how serious it is, which agency issued the warning, and where to go for more information — but for this test, it’s simply a rehearsal.
If your phone stays silent, that’s fine too, and there’s a long list of perfectly ordinary reasons why. Your device might not support AusAlert, or it might be running outdated software. You could be out of range, near a tower that’s down for maintenance, or your phone might simply be switched off or in aeroplane mode at the time. Even standing next to someone whose phone does go off doesn’t mean yours should have — different networks, towers and software versions all affect the timing. Authorities are treating this variability as useful information, not a problem to be embarrassed about, and they’re encouraging anyone who wants to weigh in to submit feedback through the AusAlert website afterwards.
One thing worth knowing: because this counts as a Critical Alert, there’s no settings menu that will silence it. If you’d rather not experience the siren at all, or if you think it might unsettle you or someone nearby, the only real workaround is switching your device off or into aeroplane mode for at least an hour around the scheduled time. And regardless of what you decide, it’s worth checking your phone is running its latest software update well before the day, with a restart afterwards, just to make sure you’re properly set up for when AusAlert goes live in October.
