What is your mobile and model ?
There are many methods for unlocking mobile phones, that is through software, codes,calculator,some tools , hardware and all ,but in that codes are best one,because it is easy to understand the instructions and enter into your mobile ,just give your IMEI number, country & network lock ,
then you can get the unlock code..........
For the good place to get the unlock code for your mobile phone, Just visit this site Unlock-Free.com , It provides the step by step instructions and simple methods for unlocking mobile phones at a safe way...........