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Turning my mobile phone PIN on or off

If you want to protect your SIM against unauthorised use, you need to turn on your PIN protection. Once done, it needs to be keyed in when you turn on your mobile phone.
Please note: your PIN doesn't prevent others from accessing the contents of your mobile phone (such as pictures and messages). You can prevent this by turning on the phone lock code.

Step 1 of 10

Find "SIM Card"

Tap the Menu key twice.

Step 2 of 10

Find "SIM Card"

Tap Options.

Step 3 of 10

Find "SIM Card"

Tap Device.

Step 4 of 10

Find "SIM Card"

Tap Advanced System Settings.

Step 5 of 10

Find "SIM Card"

Tap SIM Card.

Step 6 of 10

Turn use of PIN on or off

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 SingTel.

Tap the Menu key.

Step 7 of 10

Turn use of PIN on or off

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 SingTel.

Tap Enable Security or Disable Security (depending on the current setting).

Step 8 of 10

Turn use of PIN on or off

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 SingTel.

Key in your PIN (default is 1234) and tap the Navigation key.

Step 9 of 10

Return to the home screen

Tap Disconnect

Step 10 of 10

Return to the home screen

Tap the Return key to return to the home screen.

Swipe right for the next step

Tap anywhere to dismiss

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