Ok so here is what happened. My wife's niece jail broke her iPhone 4. One of her friends did the jailbreak for her so she had no idea what kind of jailbreak she had or what version. Anyway she can no longer make any calls or messages. She called Sprint and they told her she has phone service and that she has to send the phone to Apple. Se still ant make any calls. They told her it was some kin of virus related to a "ghost line". Sound weird. Has anybody encountered something like this? Any suggestions? She tried to restore the phone via iTunes but no luck.