There can be many ways to Unlock your phone. As far as i know unlocking by codes is the simple and safe way. Free unlocking software’s will flash the phone and affect the data’s and applications of the phone.
This site has a nearly perfect with google checkout and they were recommended highly in the cell phone forums.
http://www.unlock-zone.com/
I used them to unlock my cell phone. contacted them and took about 30 minutes and their support staff was very helpful.
Hope this helps.
