It's impossible and any service that claims to do so is fake. I've tried doing it to bypass at&ts data plan and after some extensive research figured it was impossible. Don't bother with it.
That would totally depend on the buyer. Demands for factory-unlocked iPhone 4's are especially high and I doubt anyone would bother to buy a locked phone in that area.
People unlock their phones to be able to use them with other providers globally.
Comments
People unlock their phones to be able to use them with other providers globally.