I wanted to unlock my Samsung Galaxy S8, coming over from AT&T to T-Mobile. I did not want to purchase a new phone. I was very skeptical about this service. After searching on the web i decided to go with CellphoneUnlocker. I didn't know if it would work. Not only did I get the service at half the price of other companies, I got my code in about 12 hours and it was super easy to get it done. CellphoneUnlocker is the truth. If you are on the fence trust me and try them.