I recently had the case of putting a security code then wanting to remove it but forgot some of the steps involved, of course it is always recommended to write all your passwords somewhere in case you forget them and to make them in such a manner of a combination of special characters, numbers and lower case as well as upper case letters.
The manner in which one can disable a lock code on the Nokia N8 is to first proceed to settings, then phone, phone management, security settings, phone and sim card. There will be an option that allows the user to change the lock code as well as switch it on or off. Keeping the lock code on is useful so that trespassers are kept away but can also be annoying.
Have a look at our other easier lock apps available here!