So my wife got me the iphone 5s (t-mobile) for my b day. We travel once a year outside the U.S. so I would like to get it unlocked so I can buy a pre paid card when we are on vacation. Here is the question will this (getting the unlock code) make my phone blacklisted???? Ive been reading about this blacklist thing and dont really understand it. Once its unlocked will it still be blacklisted by t-mobile???? Thanks.