Hi okay so long story short, my sister lost her iphone about a month ago. We reported it stolen, made claims through our warranty thing with amex and got a new one. However, someone found it turned it in and its been returned to my sister. Since she got a new phone, can I use the old one? even though it was reported as stolen? My parents wont let me add a data plan to my line , so if we tell AT&T that it was found, they prob will make me add it ( idk if they know that we found it). Someone told me to jailbreak it and use a different carrier..but Im on the same family plan as my sister =/ So the question is, can I still use it even though we reported it as stolen? If I restore it or something cant i just put my sim card in it and use it?