Quick answer: On Monday, 27 July 2026, almost every mobile phone in Australia will buzz, sound a loud siren-like tone for about 10 seconds, and display a full-screen message at the same moment in each time zone. It’s a nationwide test of AusAlert, a new emergency warning system, not a real emergency. If you’re traveling in Australia that day, you don’t need to do anything special — just know it’s coming so it doesn’t catch you off guard on a flight, in a meeting, or in a quiet gallery.
If you’re currently traveling through Australia, working out a layover, or simply planning ahead for a trip, this guide walks through exactly what’s happening, when it happens where you are, and a few practical things worth knowing before your phone goes off.
What Is AusAlert?
AusAlert is a new Australian cell broadcast emergency warning system built to replace the older, SMS-based Emergency Alert system. Instead of sending a message to your specific phone number the way a text does, cell broadcast technology pushes the alert out from nearby mobile towers to every compatible device in range at once — which is why it can reach almost the entire country within seconds. The system is expected to become fully operational around October 2026, and Monday’s test is one of the final checks before that rollout.
It follows a round of smaller, community-level tests. NEMA successfully tested the system in nine communities across Australia in June before scaling up to this single nationwide test.
When Does the Test Happen?
The alert is sent at the same moment in each time zone, so the exact clock time depends on where you are when it lands.
| State / Territory | Local Test Time |
|---|---|
| New South Wales, Victoria, Queensland, Tasmania, ACT | 2:00 pm AEST |
| South Australia, Northern Territory, Broken Hill | 1:30 pm ACST |
| Western Australia | 12:00 pm AWST |
The test runs Monday afternoon across the eastern states and territories, half an hour earlier in the centre, and at midday in Western Australia. If you’re crossing time zones that day — flying from Perth to Sydney, for example — it’s worth remembering the alert is timed to local time at each location, not a single moment nationwide.
What Actually Happens on Your Phone
A single test Critical Alert will be sent to every compatible mobile device in Australia at the scheduled time. On a compatible device, expect:
- A vibration, even if the phone is on silent or Do Not Disturb
- A siren-like tone lasting around 10 seconds
- A full-screen pop-up notification that clearly states it is a test
Exactly how the pop-up looks will vary slightly depending on your phone’s make, model, and operating system, but the wording will make it obvious it isn’t a genuine emergency.
Compatible devices include most smartphones, smart watches, and tablets connected to an active 4G or 5G network. Very old handsets, phones without a SIM or active mobile data connection, and devices in flight mode won’t receive it.
Language note for international visitors: messages for this test will be sent in English only, though information about AusAlert more broadly is available in 20 other languages on the official website if you want to read ahead.
Do You Need to Do Anything Before Monday?
For most travelers, no — this is designed to require zero action. A few practical notes, though:
- You cannot opt out of receiving it. Turning the phone off, or switching to flight mode before the alert time and keeping it off for at least an hour afterward, is the only way to avoid the test alert.
- Update your device software beforehand. Making sure your phone is running the latest software update helps ensure it’s ready to receive the test properly.
- Think about where you’ll be at that exact time. A sudden 10-second siren is jarring on a quiet train, in a cinema, during a meeting, or mid-flight (phones in flight mode simply won’t get it, so nothing to worry about there). If you’d rather not be startled, note the local time for your state from the table above and either mute expectations mentally or step somewhere it won’t matter.
- If the sound itself could cause distress — for a young child, someone with sensory sensitivities, or anyone who finds sudden loud alarms overwhelming — the only reliable way to prevent it is turning the device off or using flight mode for the window described above, since the volume cannot be adjusted separately from the phone’s normal settings.
Is This a Real Emergency? (No.)
It’s easy to imagine a scenario where a traveler unfamiliar with AusAlert sees a full-screen alert and panics. Two quick reassurances:
- The on-screen message will explicitly say it’s a test.
- Nothing else is required of you — no evacuation, no action, no follow-up.
This is one national test alert, sent once, to check the system works as intended before AusAlert goes live for real warnings later in the year.
Common Questions Travelers Get Wrong
“I’m not an Australian citizen — will I still get it?”
Yes. The alert is sent to every compatible device connected to an Australian mobile network at the time, regardless of nationality, visa status, or which telco you’re on.
“I’m using an eSIM or a travel SIM — does that matter?”
No. What matters is whether your device is connected to an active 4G or 5G Australian mobile network at the test time, not which type of SIM or plan you’re using.
“Will it drain my data or cost me anything?”
No. Cell broadcast alerts aren’t sent like a text message to your number; there’s no data charge and no cost associated with receiving it.
“What if I’m in the air when it happens?”
Phones in flight mode won’t receive the alert, so travelers on a flight at the scheduled time simply won’t experience it.
A Practical Checklist for Travelers
- [ ] Check which state you’ll be in at test time and note the local time from the table above
- [ ] Update your phone’s software before Monday
- [ ] Let anyone traveling with you (especially children) know a loud test alert is coming, so it isn’t a surprise
- [ ] If you’d rather skip it entirely, plan to have your phone off or in flight mode across the relevant window
- [ ] Bookmark the official AusAlert website for anything you want to double-check closer to the date
Frequently Asked Questions
What is AusAlert?
AusAlert is Australia’s new national cell broadcast emergency warning system, built to send fast alerts to compatible mobile devices during genuine emergencies. It’s being tested nationwide before going live later in 2026.
When is the AusAlert test?
Monday, 27 July 2026 — 2:00 pm in NSW, Victoria, Queensland, Tasmania and the ACT; 1:30 pm in South Australia, the Northern Territory and Broken Hill; and 12:00 pm in Western Australia.
Can I opt out of the test alert?
Not while your device is connected to a mobile network. The only way to avoid it is turning your phone off, or switching to flight mode before the alert and keeping it off for at least an hour afterward.
Will the alert work even if my phone is on silent?
Yes. It’s designed to vibrate and sound a siren-like tone even if the device is muted or on Do Not Disturb.
Do I need an Australian phone number to receive it?
No. Any compatible device connected to an active Australian mobile network at the scheduled time will receive it, regardless of where the SIM is registered.
Is this the real AusAlert system going live?
Not yet. Monday is a test only. The system is expected to be fully operational for genuine emergency warnings around October 2026.
What happens if I miss it or don’t see anything?
Very old handsets, devices without an active mobile connection, and phones in flight mode won’t receive the test. If you expected it and nothing happened, it likely comes down to device compatibility or connectivity at that moment.
Is there anything I should book, buy, or download before the test?
No preparation, bookings, or downloads are required — the most useful step is simply updating your phone software and knowing the local test time for wherever you’ll be.
