first the phone didn't have any signal and then i got a message that says that phone could not make or receive call and it needs repair. so i called apple and went through a few things to restore but nothing, so the rep. said that they would send me a new one and for me to send this one. i did have it jailbroken but with an AT&T account. question is I'm i going to have an issue since i did have it jailbroken??