Optus and Virgin customers in Queensland were woken up an hour earlier than usual this morning due to a stuff up in the mobile network's clock that automatically adjusted the time in thousands of phones across the state.
Unlike the rest of the east coast states in Australia, Queensland has resisted moving to daylight saving time during the warmer months of the year. This means that Queensland is an hour behind New South Wales, the Australian Capital Territory, and Victoria.
This morning, the ABC reported that some Queensland residents were brought into line with the rest of the east coast of Australia for a brief time after the Optus mobile network pushed out daylight saving time to customers' phones in the state.
Optus did not explain what caused the issue, but said that it had been resolved this morning.
"Due to a technical issue, selected Optus customers in Southern Queensland temporarily saw their mobile clocks changed to an hour ahead," a spokesperson for Optus said in a statement.
"We have fixed the issue this morning, so all mobiles are now back to the accurate time. Optus apologises to any customers who experienced any inconvenience this morning."
The fault is reminiscent of the 2010 bug in iOS 4 that woke Australians coming off daylight saving an hour earlier than expected.