Hi fellas.Found a really sweet deal...But to sweet to be true.Someone wants to trade a Note 4 N910F with my Iphone 5.Can it be a demo unit?Because he says that there is no signal.And nothing shows up when inserting a SIM.So any ideas?Should i do it?I don`t want to end up with a demo unit.If it`s ok and it might have a hardware problem regarding the signal i can fix it.