Www.lur.nu The site has a page where you can generate an unlock code for Nokia phones. It is a form where you enter with your phone model and some other data, then code is generated that when inserted in the device causes it to be unlocked.
You can take advantage of the service, who have one of the following devices:
Nokia 1100, 1100b, 1600, 2220, 2221, 2260, 2261, 2270, 2280, 2285, 2300, 2600, 2650, 3100, 3100b, 3108, 3120, 3200, 3200B, 3220, 3230, 3300, 3361, 3510, 3510i , 3520, 3530, 3560, 3570, 3585, 3585i, 3586, 3588, 3588i, 3590, 3590e, 3595, 3595e, 3600, 3620, 3650, 3660, 5100, 5100e, 5140, 6020, 6021, 6100, 6100e, 6101 , 6108, 6170, 6200, 6200e, 6220, 6225, 6230, 6230i, 6260, 6310, 6310e, 6310i, 6330, 6340, 6340e, 6340i, 6360, 6370, 6385, 6390, 6500, 6510, 6510e, 6560, 6585 , 6590, 6590e, 6590i, 6600, 6600e, 6610, 6610e, 6610i, 6610i, 6620, 6650, 6660, 6681, 6800, 6800e, 6810, 6820, the 6820th, 7200, 7210, 7210e, 7210i, 7250, 7250e, 7250 , 7600, 7610, 7620, 7650, 7690, 7690e, 7700, 8310i, 8390, 8390e, 8510, 8510e, 8910, 8910e, 8910i, 9210, 9210i, 9500Box, N-Gage, N-Gage QD.
Nokia 402, 503, 702, 2100, 2190, 2600, 2650, 3210, 3210e, 3210i, 3260, 3285, 3310, 3310e, 3315, 3330, 3350, 3360, 3390, 3395, 3410, 3590, 3610, 3810, 5110 , 5110i, 5125, 5130, 5148, 5160, 5165, 5185, 5190, 5210, 5210e, 5510, 6010, 6080, 6090, 6110, 6110i, 6130, 6138, 6150, 6150e, 6188, 6190, 6200, 6210, 6210e , 6250, 6290, 7110, 7190, 7290, 8110, 8110i, 8146, 8148, 8148i, 8210, 8219, 8250, 8270, 8290, 8810, 8850, 8855, 8890, i 9000.9000, 9110, 9110i.
Before you go making changes to the device, it is highly advisable:
Make a backup of the original system.
Give it a read on this page, which describes the terms of use of this service.
The author mentions that there is no guarantee it will work, and stresses that there is a possibility that something will go wrong and the unit is damaged. So do so at your own risk.
Link 1: Unlock your Nokia phone here
Link 2: http://www.trycktill.com/eng/ (Thanks El Lopez)
Link 3: http://www.peters1.dk/webtools/nokia/nokiaonline.php?sprog=pt (in Portuguese) (Thanks El Lopez)
Link 4: http://www.gsmliberty.net/shop/nokia_unlock.php (Thanks Gabriel Wobeto)
Baixatudo | Nokia PC Suite
There are also other ways to unlock. In devices of other brands, you may need to plug the device to your computer, and use some software that performs the unlock through this connection. In these cases, the risk of giving a breakdown in phone software, and it does not turn over are great.
In Nokia phones, it's a lot simpler, all you need to know, which is the IMEI code of the device. Through this code, you can use a calculator codes to generate your unlock code. Then just enter the code that gives you the calculator on your phone, and ready, will be unlocked!
An example of codes calculator, is DCT3 / DCT4 Calculator 5.4, you can download for free at this link. The procedures for release are described below:
Install the DCT Calculator
Remove the SIM card of the phone, and then find out the IMEI code of the device by typing: * # 06 #
Enter the IMEI code in the DCT, select your country and operator to which the device is locked
Also in the program, select your phone model and click 'Calculate' to generate the unlock code
7 of the code that will be generated, type the last on your device.
If all goes well, your phone will be unlocked for use with any GSM carrier.
Another very good software, is the Nokia Free Unlock Code Calculator, download it here. Apparently, both the DCT and this software also can generate unlock codes for mobile Samsung, Siemens, LG and others.
Some operators (such as Vivo eg) tend to not only lock the phone, but features such as Bluetooth, Infrared, MP3 ringtones and applications / java games. To unlock these resources, there is a software called Diego.
I've been searching on Google and saw that many sites offer the same to download for free, but from what I understand, the software is paid. As I am not in favor of piracy, I'd rather not put the link here. Diego said that the software is widely used for technical assistance and retail stores, a sign that he is really good.