Got the unlock code for my new Samsung Galaxy S4 from unlockunit.com. had some problems with getting the phone to take the code but with a few emails and their rapid response I had my phone unlocked quickly. I was extremely grateful for their serve since I am currently in Afghanistan and had bought my phone while home on vacation and could not get it to work with a local sim until I got it unlocked. My wife got a phone the same time I did and we are planning on vacationing overseas on my next vacation and I'll be using unlockunit.com to unlock her phone also. I highly recommend using them to unlock your phone.