Device Guides

Apple iPhone 16 Plus

iOS 18

iOS is the operating system software installed on your iPhone. To find out which version you have: Tap Settings, Tap General, Tap About, and view the version number.

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I can't access my mobile phone

This troubleshooting guide will take you through a number of possible causes to help you find a solution to your problem.

Possible cause 7:

You're asked to key in the PUK: Please note: if you haven't received a PUK or don't know it, it can be obtained by logging on to Optus My Account.

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