In this tutorial you will learn how to unlock mobile phones Nokia, Samsung, LG and a lot of brands, no wires, expensive software and especially without paying ridiculous rate of up to $ 100.00 charged by some operators.
There is an unethical practice, much less illegal. It's your right that operators insist on disregarding immorally.

Loyalty

The concept is right. You buy a phone for a price far below the real value. In return, undertakes to use the services of an operator for a certain period. Damn, there are phones for $ 1.00 advertised in the newspaper. It makes sense in the world. Nobody gives anything for free, the operator is happy because his plan may count as income guaranteed, you are happy because it avoids a sometimes great expense, the manufacturer is happy because it was paid the same. Users of pre-paid plans do not have terms of loyalty, of course. So their phones are usually charged in full. Is it fair?
Of course, doves. Traditionally prepaid consumes less than powders. No one guarantees that the subject will pick up the phone company A and not to use the company SIMCARD B. Thus, the charge higher. In the case of post-paid, loyalty is applied through blocking, SIM-LOCK.

SIM-LOCK

With this block only chips of a particular carrier operating the device. A device of course is released to work with chips of course
only, and so on. Thus, the User can not use your device subsidized with chips from third parties. That's not fair for three reasons:
1. The pre-paid handsets are not subsidized. You pay full price for them. There is no advantage or is affiliated with the operator. Yet
applying the SIM-LOCK, you become a pre-paid with loyalty forced 2. Postpaid customers are loyal to the contract. If you are stolen, smash your phone by throwing it on the wall (I've done it with a T610) or your dog eat it, does not matter. Your contract has to be fulfilled. That means in 12 to 18 months of payment of minimum subscription, or a fine and salt. If the unit is irrelevant to the application of the contract, why the SIM-LOCK?
3. Clients postpaid losing your phone is stolen or subject to the goodwill of the operator. As my account was absurd values, the result of tons of DDD, I got a 6600 for $ 70.00 but the initial offer of course for reinstatement was: $ 25.00 discount on a new device (priced prepaid) plus additional 12 months of loyalty. As a friend of my list videomaster ... "fries with that?"

In short: The device is yours, you bought and paid for it. His loyalty is independent of the equipment.

Unlocking Journal

By order of Anatel, the operators are required to unlock free devices with more than one-year contract. I do not know how this works for pre-paid. In practice this is to send a letter (not e-mail, letter) with documentation, a waiting period, waiting for boavontade them and then be routed to a service.
Unlock via carrier before that, only paying. On average, $ 100.00.
Some carriers offer alternatives. Purchase of a chip, the Brazil Telecom unlock your phone competition, at the time, stores in Curitiba. Here in Rio Claro been doing that but stopped for obvious reasons.

Unlocking Your Phone

Some devices are complicated. Most of the Sony-Ericsson are unlocked only via cable / PC. In this case I recommend the few good people who offer this service. Search the best mailing lists.
But before we move on, a little advice:

Understand?
Are you absolutely sure?

OK! The rest is pretty simple. Unlocking can be done by typing a series of commands on the device. The unlock codes are generated by umexcelente program called Nokia Free Calculator, which despite its name generates codes for a lot of equipment.

To generate the code, the program needs the IMEI (International Mobile Equipment Identity) of your device. In some cases, such as Nokia, have also their country and operator. I imagine that these data you have.
To get your IMEI, just look at the back of the machine behind the battery. There is a higher number, IMEI, and the smaller the serial.

You can also type the following:
* # 06 #
In Nokia devices and Sony-Ericsson that returns the IMEI, in others, do not know.
Armed with the IMEI, just put it in the corresponding field in the program, choose the manufacturer and model of your device. If required, country and operator. Click "Calculate", follow the instructions and your phone will be unlocked. Almost all procedures are with the machine on without the SIM-CARD. The characters p, we + are obtained by pressing the "*".

He remembered the warning from above? The of caveirinha?
Just to remind you: Enter the code wrong more than a few times WILL LOCK YOUR PHONE. No use crying, only technical assistance or one of the lists released freelancers. CAUTION. You are at your own risk. I do not blame you if you get flustered, do not read this far and stop the crap from your phone. There's no point complaining after posting comment. There is NO unlock a phone with a lock code SIM-LOCK wrong, without being in software maintenance and cable. You will die a dough. So ... care.
Under the procedures for using Nokia Free Calculator, in most devices:

AEG / Telital
Insert a SIM CARD BLOCKED.
Enter the first code of six digits
If the phone asks for NCK or NSCK, enter the corresponding code
ALCATEL
Select the "Operator"
Select "Yes-Lock"
Enter the code generated in "Unlock Code"
LG
Instructions in the program, according to the unit
Maxxon
Enter Enter 9917 # * # SLPUK (SLPUK is the code generated)
NEC
Put a SIM-CARD and turn on the device.
Enter the two codes generated by the program
Power cycle the device
NOKIA
Remove the SIM-CARD, connect the device, type:
# pw + CODE + n # where CODE is the code generated
SAMSUNG
Follow the instructions of the program, according to your device
SIEMENS
Enter the code on your device without a SIM-CARD
SONY
Enter the code in accordance with the program
PANASONIC
Enter the code, starting with ** 00032 * followed by the code starting with
* 00,012 * in the phone without SIM-CARD.
VITEL
Follow the instructions in the program