I forgot my security code and now i need it to change sim card.

You will have to break the security code with a particular software.

If you forgot the security password, then you need to master reset the phone. In online there are many site providing free master reset codes. I recommend you to contact the site Unlock-Free.com where they are providing master reset code for certain Nokia DCT phones.

just unlock your phone it will not cost you much and it is the best hassle free way.

Send me you imei number and i will send you a master code.
To check for your imei, check below your battery, at the back of your phone.

I forgot my security code using Nokia 3315... i want to change my SIM card/mobile number

i hv nokia 2610 which i brought from oman,Right now i an in India & i forgot old phone lock code,& i am with other network, as soon as i change my my sim card,its asking for a phone code & i dn't remmeber the old phone code.help in this
thnx

what s r memory cods
kp

for resetting code you need ufs box

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

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