I forgot security code of my nokia 6680

SOURCE: Resetting Security Code

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. To reset it, you need the PUK code:
Pin Unlock Code (PUK)
If you miss key (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 PUK unlock code to release it. You should ask your Network Service Provider for this code when you need it. Don’t try to guess it, because after a few wrong guesses, the SIM card will be permanently disabled.
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. To reset it, you need the Master code code:
Master Reset Code
Sometimes known as the Master Code, this allows you to unlock a handset if you have entered the Security Code wrongly too many times.
Which is the one that you want?
The default security code for Nokia is 12345

SOURCE: nokia 7200 security code,,,,

Hi tantan0026,

try this:
6574771352

REMEMBER YOU DO NOT ENTER WRONG CODE MORE THEN 3 TIMES. PLEASE DO IT ON YOUR OWN RISK,OR GO YOUR NEAREST NOKIA SERVICE CENTER.
ALL the best

SOURCE: Need to reset my security code for Nokia 6070. Please help

The default security code for Nokia is 12345
IMEI: 353235015522555
Master code: 2564610140
Close all applications on your phone.
With your phone switched ON, remove the battery.
Then remove the SIM card.
Replace the battery without the SIM card and switch your phone on.
Type in the security codes (any code) until the phone request the Master code, (in the phone lock window) when it does, leave your phone still, don’t use it for 15 minutes, then type in the Master code.
This is the code needed to reset the Security code, nothing else, and it’s for your phone only.
If it does not request the Master code, your phone will have to be connected to a computer and an unlock box to restore the Security code.

SOURCE: how to break my nokia 1100 security code

12345 or 00000

SOURCE: Nokia 6681 forgot security code

If you want to reset your security code, use 0110452157 as your security code and change the current code.

Call me on +919917436086 if you have another problem.