Samsung Galaxy S4
Turn use of PIN on or off
The PIN protects your SIM from unauthorised use if your phone should get stolen. You can change your PIN to a PIN easier to remember of your choice. Remember, you need to turn on use of PIN.
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1Find "Set up SIM card lock"
- Slide your finger down the display starting from the top edge of your phone.
- Press the settings icon.
- Press the More tab.
- Press Security.
- Press Set up SIM card lock.
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2Turn use of PIN on or off
- Press Lock SIM card to turn the function on or off.
- Key in your PIN and press OK.
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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 the wrong PUK is entered ten times, your SIM will be blocked permanently. In this case, you need a new SIM from Telstra.
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3Return to the home screen
- Press the Home key to return to the home screen.