Nokia E55 - Device and SIM card security

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Device and SIM card security

To change the PIN code, select

Phone and SIM card

>

PIN

code

. The new code must be 4 to 8 digits long. The PIN code

protects your SIM card against unauthorised use and is

provided with the SIM card. After three consecutive incorrect

PIN code entries, the code is blocked, and you need to use the

PUK code to unblock it before you can use the SIM card again.
To set the keypad to lock automatically after a defined period,

select

Phone and SIM card

>

Keypad autolock period

.

To set a time-out after which the device is automatically

locked and can be used only if the correct lock code is entered,

select

Phone and SIM card

>

Phone autolock period

. Enter

a number for the time-out in minutes, or select

None

to set

off the autolock period. When the device is locked, you can

still answer incoming calls, and calls may still be possible to

the official emergency number programmed into your

device.
To set a new lock code, select

Phone and SIM card

>

Lock

code

. The preset lock code is 12345. Enter the current code

and then the new code twice. The new code can be 4-255

characters long. Both alphabets and digits can be used, and

both uppercase and lowercase alphabets are possible. The

device notifies you if the lock code is not properly formatted.