Can I do this myself like using a program or how does it work? Thanks!
several places on the internet and ebay offer this service, it goes from 10-20 dollars, sometimes cheaper, as far as I know it can't be done by yourself
The price depends solely on the carrier. For Vodafone UK the cheapest price I could find was around $120 - mind you, that was the cheapest. Most hovered around $200.