There are two main technology with cell phones, GSM and CDMA. This video will explain to you 3 ways to know if it is GSM and at the end, I will share with you why we dont unlock GSM and why it is pointless. Go now to http://globalunlock.com
http://globalunlock.com How Do I Know If My Phones Unlocked? You have done the steps, your phone says it is successfully unlocked. How do you really know? This video will show you how you can find out if it is active.