Hey guys, sorry if this is in the wrong forum. I wasn't sure where else to put it. So I've heard all these things about "unlocked" phones and I'm wonder what exactly it means. I know that Apple sells unlocked iPhones for around $600, so I assume it means something about reducing the monthly contract because it is so expensive. I've also heard that the Nexus 4 is also unlocked. If I'm (mildly) correct, what network do these phones run on? How much is it per month? Is there a data limit? Thanks.