I know it is a rather general question, but I am still left in confusion. I am planning to buy a factory unlocked N910F but does that mean it comes straight from the factory before it is sold to any carrier? For example, Apple sells the unlocked iPhone on their website, and from what I understand, it is straight from the factory. Though, I have read that factory unlocked also means that the carrier unlocked it. If the phone is carrier unbranded, is it safe to say that it is straight from the factory and not a phone that was once associated with a carrier and carrier unlocked? And what is the process in which these sellers usually obtain these devices exactly?