At approximately 4.30am (AEST) this morning we identified an issue affecting some mobile calls and data services. As of 9:00pm, the issue in our network is almost resolved.
Last updated: 9pm AEST, Wednesday 8 July 2026. We'll keep updating this article as we know more.
We know how much our customers rely on us to get it right - to do their jobs, run their businesses, stay safe and keep in touch.
We're deeply sorry for the impact this issue has had on so many people today.
While we've restored the issue that caused today's outage, we've identified a secondary issue impacting some calls including Triple Zero.
In these cases, when you call Triple Zero you will receive an error message and your phone will try to connect to an alternative mobile network.
As part of our back up process, we will complete a welfare check where we detect a failed Triple Zero call.
If you experience any issues calling Triple Zero, we recommend you:
We're working urgently to resolve this issue.
The issue in our network has now mostly resolved. In our last update, just under 90% of calls and data services were back up and running - since then we've restored more remaining services.
It may take some time for all devices to reconnect correctly. If you're still having issues, please restart your phone or device. We're also working closely with our enterprise customers to resolve things on their end.
If you are still experiencing issues, we recommend restarting your phone rather than just switching on airplane mode. We will share another update once all services are back online.
We've been able to restore some of the affected nodes, but it's taking time to flow through our network. Most calls and data are working correctly now. Our teams are working as quickly as possible to restore the rest.
At approximately 4.30am (AEDT) we identified an issue affecting a number of nodes that help keep time across our mobile network. When these nodes are not operating as expected, other parts of the network can be affected, resulting in intermittent issues with some mobile calls and data services. We began investigating immediately and started work to restore services.
We've seen reports of fraudsters calling customers, claiming to be from Telstra and trying to take advantage of today's outage.
Please be extra vigilant. If you get a call from someone claiming to be from Telstra asking for your details in light of today's outage, hang up and call us directly.
Most devices will reconnect automatically, but some may take time. If your calls or data still aren't working correctly, restart your phone or device.
If you're an enterprise customer, we're working closely with your teams to resolve things on your end.
We monitored Triple Zero calls very closely throughout today's outage. We tested Triple Zero calling early this morning and confirmed it was working successfully.
As part of our standard process, we conduct a welfare check whenever a call to Triple Zero is unsuccessful or drops out after connecting.
As of 5:30pm (AEST) today, we have completed 395 welfare checks:
167 people responded to our SMS to confirm they didn't need assistance
143 people confirmed on a follow-up voice call that they didn't need assistance
79 people were referred to relevant state police service for a physical welfare check
6 people told us they needed assistance, and we addressed that directly with emergency services.
The volume of welfare checks was higher than we expected, which prompted us to investigate further. In some cases, a phone wasn't able to connect correctly on its first call attempt, which triggered a callback from us. In other cases, the call was picked up by the TPG or Optus networks and connected successfully.
We expect these numbers are inflated by a larger number of people calling to test Triple Zero, and as a flow-on from the core issue. Our backup systems worked as they should throughout.
Our investigation into the root cause is still underway, but we're confident we've identified a software defect and have been able to isolate it. We'll share further technical detail once the investigation is complete.
This was not the result of a cyber incident.
Thank you for your patience and understanding as we've worked to put things right. We don't take that for granted.
