So I sold an extra iPhone 5 of mine on ebay. Some guy in malaysia bought it. I never opened or activated it before I sent it. However now he is messaging me telling me that he cant activate the phone and that he cant unlock it until it is activated. I dont want to give him the last 4 of my social to activate it, and then it will also kill my sim card... What should I do? Or what can he do? Does it have to be activated to be unlocked?