WorldUnlock Codes Calculator is a free application for Windows that allows you to unlock Nokia, Siemens, Vitel, Maxel, Panasonic, LG, AEG, Samsung and Motorola brands at home.
The first step to unlock is to obtain the IMEI of the device. One way to obtain this number is on the back of the device (behind the battery). Another way is to enter the code * # 06 # . You can also find this code in the box that comes with the product. You can also find it in the device settings (usually in Settings > About).
With the IMEI in hand, choose your device model and enter the code in the appropriate field, after that, click on the Calculate button. With this data the utility will generate a code. Turn off the device, remove the chip and turn the device back on.
When the phone turns on, test the code. If it displays the message "Restriction removed" the device has been successfully unlocked, otherwise you can make further attempts. There are usually only 5 attempts, if none of them work, the only way will be to take technical assistance.