Open Settings
. Select General > Security > Phone and SIM card and from the following:
- Code in use Select PIN or UPIN, according to your SIM card type.
- PIN code request or UPIN code request To protect your device and SIM card against unauthorised use, select On. When you switch on the device, you are prompted for the PIN code. If you enter a wrong PIN code too many times, your PIN code may be blocked. To unblock the PIN code, you need PUK (personal unblocking key) codes. If these codes are not supplied with the SIM card, contact your service provider.
- PIN code or UPIN code To change the current PIN code, enter the old PIN code once and the new PIN code twice.
- PIN2 code The PIN2 code may be supplied with your SIM card. To change the code, enter the old PIN2 code once, and the new PIN2 code twice. Some network services may require the PIN2 code.
- Keypad autolock period To automatically lock the keypad and prevent accidental keypresses when you do not use your device for a defined time, select User defined. Enter the time-out period.
- Phone autolock period To automatically lock your device when you do not use it for a defined time, select Change > User defined. Enter the time-out period. You need the lock code to change this setting. To automatically lock your device when you do not use it for a defined time, select Options > Change > User defined. Enter the time-out period. You need the lock code to change this setting.
- Lock code The lock code (5 digits) is used to unlock the device. To change the current lock code, enter the old code once and the new lock code twice.
- Lock if SIM card changed To prevent the use of your device with an unauthorised SIM card, select Change > Yes. You are prompted for the lock code every time a new SIM card is inserted. To prevent the use of your device with an unauthorised SIM card, select Options > Change > Yes. You are prompted for the lock code every time a new SIM card is inserted.
- Remote phone locking To enable locking your device with a text message, if the device is lost or stolen, select Enabled. Write the locking message. You may need to enter the lock code to change this setting. To use a remotely locked device again, enter the lock code.
- Closed user group (network service) Restrict incoming and outgoing calls to specific groups. Select Change > Default to activate the group agreed upon with your network operator, or On to enter the index number of another group. Restrict incoming and outgoing calls to specific groups. Select Options > Change > Default to activate the group agreed upon with your network operator, or On to enter the index number of another group.
- Confirm SIM services To display the confirmation messages sent between the device and the network when you use network services, select Change > Yes. To display the confirmation messages sent between the device and the network when you use network services, select Options > Change > Yes.
To save your settings, select Back.
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