Vodafone 553

Find "Phone password"

Press the Menu key.

Find "Phone password"

Press Settings.

Find "Phone password"

Press Security.

Find "Phone password"

Press Change password.

Find "Phone password"

Press Phone password.

Change phone lock code

Key in the current phone lock code (default is 0000) and press OK.

Change phone lock code

Key in the new phone lock code and press OK.

Change phone lock code

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

Exit

Press Disconnect to return to standby mode.