If your talking about a lock put on by the owner (password) they dont unlock it but they do a factory reset of the phone and that wipes all information that was previously on it. All user info will be gone. And they will charge you alot for just pushing a few buttons. You can do it yourself. Just GOOGLE it. Its simple.
Most phones besides sprint and us cellular they can do. It can take anywhere from same day to a couple weeks. And the price can vary, but generally yes. Just give them a call and let them know the model and carrier service
Thanks! Your answer is awaiting moderation.