Telstra customers cut off from the network after Apple update bricks older iPhones

Telstra is investigating an issue preventing customers with older iPhones from connecting to its network, including Triple Zero, after a recent software update.
Customers with iPhone 8, iPhone 8 Plus and the iPhone X (all released in 2017) have experienced issues after installing an update designed to allow them to still connect to Triple Zero.
But the update has now cut off Telstra customers from the network completely – including regular calls and Triple Zero calls.
Apple has paused soft