All you have to do is purchase an unlocking code and you are good to go. No more subsidy code and you are free to place whoever’s sim you want.
I have been unlocking phones since I switched to AT&T a while back. Personally, I understand why AT&T and others applies a subsidy code to their phones; they do not want to loose revenue.
Frankly AT&T and the lot charge way too much to use their services abroad for it to make financial sense for me use my AT&T sim outside the states. Therefore, I have to unlock the phone which defeats the purpose of the subsidy code to begin with. Honestly, I would rather pay a few more bucks a month and receive an unlocked phone, as I believe that cell phone service is fairly inexpensive to begin with.
Dan