First up, my code worked without a hitch and was for my Samsung S3 locked to tmobile. I didn't realize the phone was locked and made the mistake of traveling expecting to be able to use a new sim without issue, I was mistaken. The code was supposed to come in under a day but I received an email telling me it may take up to 72 hours. This was pretty much how long it took, which was too slow considering I was without a phone and had no way to contact anyone without paying crazy roaming charges. But regardless, it came and it worked so I'm glad