I recently bought an S20 Ultra from ATT and travel out of the country a lot. Since the phone is financed, ATT requires that you have the phone at least 60 days and also paid off before they will unlock it. I searched Google and found this website and immediately investigated the reviews to see if it was legit. After a few hours of research, I decided to give it a try and tbh, I did not think it would work considering how new the phone is and that I am a brand new ATT customer. Well to my surprise, less than 48 hours later, I received an email with the unlock code. Again, I thought it was not going to work but gave it a try. I changed the sim in the phone to a Sim from Mexico and entered the code when I was prompted... it worked! I now have a carrier unlocked phone.