Device Guides

Apple iPhone 5c

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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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How to

Turn use of PIN on or off

Your PIN protects your SIM from unauthorised use if your mobile phone should get stolen. If use of PIN is turned on, it needs to be keyed in when you turn on your mobile phone.


List view

Find "SIM PIN"

Tap Settings.
Tap Phone.
Tap SIM PIN.

Turn use of PIN on or off

Tap the indicator next to "SIM PIN" to turn the function on or off.
Key in your PIN and tap Done. The default PIN is 0000.
If an incorrect PIN is entered three times in a row, your SIM will be blocked. To unblock your SIM, you'll need to key in your PUK. The PUK can be obtained by contacting Customer Service. Please note: If an incorrect PUK is entered ten times in a row, your SIM is blocked permanently. In this case, you'll need a new SIM from Optus.
0000

Return to the home screen

Tap the Home key to return to the home screen.
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