There can be many ways to get your unlock code. If your contract period is complete you can ask your cellular operator for the unlock code. But, they do make it very difficult for you to get the code.The unlock code varies from individual handset to handset. when it comes to unlock i recommend you to choose the right and reliable vendor . you can unlock your phone instantly with a few minutes. You can also visit Unlocking4u.com This site offers at cheap cost.make use of this site and unlock your mobile according to the network you reside.
Hope this helps you.