Device Guides

Apple iPhone 5s

iOS 11.0

iOS 9.0

iOS8

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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.

To use a SIM from another service provider, you'll need to contact customer service to unlock your mobile phone.

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Possible cause 4:

Your mobile phone is locked to Optus

Solution:

To use a SIM from another service provider, you'll need to contact customer service to unlock your mobile phone.

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