Secret Code For All Phone

Hi mantrix Thanks for starting discussion on such a good topic.But you seem o be knowing some of these tricks,so why do not you post them by yourself.By the way,I own a Nokia Mobile Phone so I hope the trick becomes helpful for me.

its true..?but i dont know..sorry..

I would like to know about these codes. What they are used for and how they are used. Or how these are activated. You seem to know something about them so I highly suggest you sharing these to us in myLot. I am pretty sure these will be of great use to most of us who use cellular phones. Plus these can still be used for a better purpose and to better use these devices with much ease. I'd really like to know at least one code. thanks!

the code to find manufacturing date and all on nokia phones is *#0000#.