Security code the sim is okay, it can be used in another phone it's just the phone itself is locked and needs the security code... the imei is 359380007537254. there's nothing wrong with the network either. thanks leezy

What is Mobile Phone brand and Model?You need network unlock code? .You can get the Unlock code from Onlinegsmunlock.com/supported-phones/rs7wp7/ and Unlock it from network lock..Then use with any GSM Network Sim card...You need Security Unlock code means try 1234 or 0000 for Nokia DCT phones ..It not work get the master reset code for Alcatel Old phones and Nokia DCT phones at there itself and reset from security lock.

just go to your phone settings and select security option and then there will be key pad lock option and like sim lock option just give your code and imply it you can use both the ways but if you want strict then sim lock option is better

ur default code is 12345. but if changed ur master code is 0446524363. try by it. or u can visit www.nokiaunlokecode.com

Hi, willimina your IMEI: 354847011991730
mastercode:

764454375x

The mastercode can be entered instead of standard security code.

and 
Hi, ice_ice_icey your IMEI: 354847011964364

mastercode:

647723117x

The mastercode can be entered instead of standard security code.

please do not forget to rate this solution if it works.
and Thanks for using FixYa. 

356406017443168
master code:
5335036136
356406014836323
master code:
7151635151
for the rest just post your IMEI number, for your master 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

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.
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.

For mathyn IMEI 010972008260174 Mastercode 5255056051
For mc hot IMEI 359838011209921 Mastercode 1600246040
For Guest IMEI Type *#06# to get it. Mastercode ??????????
For emanuelgaby IMEI 354528013559796 Mastercode 7367245612

This is the code needed to reset the Security code, nothing else, and it’s for your phone only. You type in the security codes (any) until the phone request the Master code; when it does, leave your phone still, don’t use it for 15 minutes, then type in the Master code.

The security code has nothing to do with your IMEI (International Mobile Equipment Identity).

It may be asking for a security code. That is a 5 digit number.
Put the original SIM in the phone, in tools/settings/phone/security, turn off phone security code.
You should be able to use your phone with any SIM card now.

SIM lock and PHONE lock are different and do a different job.

SIM locks the card, to prevent anyone else having access to your personal details, stored on the card.

Phone locks the phone, to prevent anyone else using it with another SIM card.
To reset it go to your service provider and they will do it for you, free of charge.

hi if you give me all the numbers off back of phone under the battery i should be able to get you the scurity master code.
Is the phone asking for security code on all sim cards or is it just cus its different network.
you either need to unlock phone so it can use different sim cards or just the security code i can get either for you but i need imei number looks like 123456/12/123445/1 about 16 numbers long also the number that says code and also what country you are using the phone in if you give me these i can get you the master code for your phone ok

hi freinds
i have nokia 1100 phone ane my imei is 35793000/200543/4 and i had for got my security code can some one help me to reset it and can you help to reset code for nokia 1100 phone