Hi My sweet but not so bright friend bought me a White iphone 4s off the internet for my birthday. I am not sure where he purchased it from but I know it wasn't ATT which it is assigned to. It is just the phone and it is set to factory settings, nothing on it and doesn't have a sim card. It isn't jail broken. I don't want to offend my friend who gave it to me who is proud of his gift but I want to know if it is legit to use. I know these things get lost or stolen is there a way to check if it was or test it if it works on my network. I currently have a 3gs on ATT, I know the sims are different sizes, I don't want to try to cut mine up and not be able to put it back in my 3gs. What are my options? Can I go into an ATT store and have them transfer my data to a micro sim and still keep my 3gs sim, what happens if the phone is hot or one someone lost? Will ATT take it or will I get in trouble, I don't want to be ungrateful but I also don't want to put myself in a precarious situation. Thanks so much for any advice.