I have an old Nokia 6085 with a faulty monitor, flickers on and off. I noticed that it had a small VGA camera on it. I was wondering if I could turn this into a mini (wireless) security camera, possibly for mounting on an RC helicopter. If so, how would I do this? (Turn it into a camera that can record and possibly store data?)
Yes, it is possible, but the very fact that you needed to ask indicates that you do not have sufficient skill for it to be a viable option. Miniature cameras with built-in transmitters are so inexpensive nowadays that it would scarcely be worth the effort involved in attempting it. I have the training and experience necessary to do such a thing but I would not consider attempting it.