Security code I could not turn on my phone on, i have an n70 because i forgot my security code. Could you please tell me know to unlock the phone? Here are all the info from the back of the phone 359380/00/753725/4; code 0530431;

This code; 0530431 is the product code, it's mainly used to check the software version your phone is using. This is the version your phone should be on:
Latest available software for Nokia N70, product code 0530431
Version: 5.0638.3.0.1
Compare numbers
If this version is greater than your current software version, update now to get the latest features, applications and improvements. Go to Nokia Software Updater download To check the version that's on your phone now, type *#0000#
then compare with the one above. 1st Line is: Software Version,
2nd Line is: Software Release Date,
3rd Line : Compression Type. (
Nokia model type
)
SIM pin code:
This is a pin code that locks the sim card until you enter the correct code. This protects your account, even
if your sim is put into another handset.
Phone Security Code:
This locks the handset, as opposed to the sim card. You can also set some handsets to only accept a "new" sim if the phone security code is entered.

If you simply can't switch your phone on because you have forgotten the PIN number, then
Pin Unlock Code (PUK)
If you miss keyed (or forget) your SIM Pin code, and enter the wrong one 3-5 times in a row, the sim will lock up, and you'll need to enter the unlock code (PUK) to release it. You should ask your Service Provider for this code when you need it. Don't try to guess it, because after a few wrong guesses, the sim will be permanently disabled.