Please forgive me for the silly post, but I have tried searching and cannot find exactly what I need to know. I just need to be sure when I erase all content and settings on my iphone 5 icloud is then unlocked? I have sold it and my buyer wanted me to double check that it is indeed unlocked and I am not quite sure I know the answer to that? What else do I need to do to be sure my buyer is able to use the phone? Thank you!