Nokia E7

Find "Lock code"

Press the Menu key.

Find "Lock code"

Press Settings.

Find "Lock code"

Press Phone.

Find "Lock code"

Press Phone management.

Find "Lock code"

Press Security settings.

Find "Lock code"

Press Phone and SIM card.

Find "Lock code"

Press Lock code.

Change phone lock code

If a phone lock code has been created already:
Key in the current phone lock code and press OK.

Change phone lock code

Key in a new phone lock code and press OK.

Change phone lock code

Key in the new phone lock code again and press OK.

Exit

Press the Menu key to return to standby mode.