Telstra, Optus 3G switch-off endangered by Triple Zero issue

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Some customers have 4G handsets with emergency calling quirk.

Telstra and Optus could be delayed in shutting down their 3G networks over concerns that the closure could cut off a portion of customers from Triple Zero services.

Telstra, Optus 3G switch-off endangered by Triple Zero issue

The government on Sunday said it is creating a working group comprising Telstra, Optus, TPG and the Australian Mobile Telecommunications Association (AMTA) to manage the 3G to 4G switchover “in a safer way”.

At issue is an estimated 740,000 Australians with 4G handsets that are configured by the manufacturer to make all voice calls over 4G except for Triple Zero, which utilises 3G.

“The government is concerned customers in possession of particular 4G handsets may mistakenly believe their mobile device is unaffected post-switchover, as the handset could continue to operate normally for voice and data, except when trying to call Triple Zero,” Communications minister Michelle Rowland said in a statement.

Rowland said that efforts are being made by industry to inform customers with incompatible handsets ahead of the remaining switches.

The working group is intended to formalise approaches by industry and create a mechanism to report to the government on progress.

Rowland warned that, “If warranted in the public interest, options exist under law for the government to consider regulatory intervention – including proposals for delays to planned switchovers, subject to required consultation and procedural processes.

Telstra plans to shut down its 3G network on June 30 and Optus from September 1; TPG closed its 3G network at the end of January.

The issue particularly affects handsets sourced on the ‘grey’ market - imported from overseas.

The government urged users not to run their own compatibility tests.

“The government strongly advises consumers against placing test calls to Triple Zero, given impacted devices will still work over existing 3G services until the 3G switchovers occur later this year,” Rowland said.

“This will not provide an answer on whether your phone is affected and could prevent others from accessing life-saving support.”

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