Written on: 30/05/2013
I had a problem with a Samsung Galaxy S3 Mini on T-Mobile that was supposedly unlocked, but for some reason only worked on some sims and not the one I needed it to work on. I used this service to unlock the phone. At first it didn't work, but I emailed UnlockUnit's customer service and they replied in just 5 minutes. My phone's working perfectly now. Highly recommended!