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The PIN protects your SIM from unauthorised use if your phone should get stolen. If use of PIN is turned on, it needs to be keyed in when you turn on your phone.
1. Find "SIM PIN"
Press Settings.
Press Phone.
Press SIM PIN.
2. Turn use of PIN on or off
Press the indicator next to "SIM PIN" to turn the function on or off.
Key in your PIN and press Done.
3. Return to the home screen
Press the Home key to return to the home screen.
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