Millions of Australians nationwide experienced intermittent signal drops, zero bars, or “SOS only” status throughout Wednesday morning due to a sudden Telstra mobile network outage.
This large-scale outage, reportedly caused by a software defect, impacted mobile calls, data services, EFTPOS payment terminals, traffic lights, regional train networks, and even EV chargers across the continent.
For EV owners, the disruption highlighted how heavily modern public charging infrastructure depends on reliable mobile network connectivity.
The Australian Electric Vehicle Association (AEVA) says the recent nationwide Telstra outage, which left some EV owners unable to use public charging stations, should serve as a wake-up call for stronger regulatory standards.
What happened with the Telstra network?
On the morning of 8th July, 2026, many Australians nationwide woke to a mobile network (Telstra) outage. Many customers reported seeing “SOS Only” or no mobile signal on their devices.
Major disruptions affected Melbourne’s V/Line regional trains, regional New South Wales rail services and payment networks, including Tyro, in the morning.
Other services affected included:
- EFTPOS payment systems
- Taxi payment networks
- Public transport ticketing
- Chargefox EV charging platform
There were also conflicting reports about whether Triple Zero (000) services were affected, similar to issues experienced during a previous Optus outage.
How were EV drivers affected?
The outage exposed the reliance of Australia’s public EV charging network on mobile telecommunications.
Charging authentication failures
Many public chargers use SIM cards connected to Telstra’s mobile networks to communicate with central servers. Some drivers plugged in only to find chargers:
- Unresponsive
- Unable to authenticate charging sessions
- Stuck on loading screens
Mobile apps stopped working
EV owners using Telstra as their mobile provider were also unable to:
- Locate charging stations
- Check charger availability
- Start charging sessions through mobile apps
Payment problems
Even where charging stations remained operational, the simultaneous disruption to the EFTPOS network, including Tyro payment terminals, prevented some drivers from paying by debit or credit card.
Which charging networks were affected?
The extent of the disruption varied depending on which telecommunications provider individual charging networks used.
Chargefox heavily affected
Australia’s largest EV charging network, Chargefox, experienced partial outages across its network. There are more than 2,200 charging plugs nationwide, and the majority of them were either affected or completely unavailable during the morning peak.
Regional charging disruptions
Localised outages also affected:
- WA EV Network charging stations in Western Australia
- Various NRMA charging stations in New South Wales
Tesla Superchargers continued operating
Tesla Superchargers and some independent charging networks that use Optus or Vodafone telecommunications services remained fully operational throughout the outage.
Charging services progressively returned to normal as Telstra restored its network on Wednesday afternoon.
At the same time, communities like the Australian Electric Vehicle Association (AEVA) emphasised that EV charging systems must feature physical and offline fallback options, including local RFID card authentication, offline credit card processing, or “default-to-free” modes if a network connection drops.
What caused the Telstra network outage?
Telstra Chief Financial Officer Michael Ackland confirmed the outage was caused by a software defect introduced during a system update. The issue affected specialised network time-keeping servers located in Sydney and Melbourne.
The servers falling out of sync caused widespread intermittent failures across the network because accurate time synchronisation is essential for authenticating and routing traffic across Telstra’s network. Telstra also confirmed there was no evidence of a cyber attack or malicious activity.
Brief overview of Telstra
Telstra is Australia’s largest telecommunications provider, offering:
- Mobile network services
- Fixed-line internet
- Pay television
- Digital technology solutions
Its mobile network covers approximately 99.6 per cent of the Australian population, with extensive 4G LTE and 5G coverage across metropolitan, regional and rural Australia.
Bottom line
The nationwide Telstra outage on Wednesday disrupted far more than mobile phone services, temporarily leaving some EV owners unable to charge their vehicles due to failures in charger authentication, mobile apps and payment systems.
This incident highlights the growing dependence of Australia’s public EV charging infrastructure on telecommunications networks and argues that it demonstrates the need for stronger regulatory standards as EV adoption continues to grow.
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