I would suggest a trustable unlocking site called http://www.mobileunlocksolutions.com/samsung-u900-soul/rs1wp9/ here you need to specify your Country.Network name to which it is locked,IMEI number of your phone.Then they deliver unlock code to you through mail.And you can get free unlocking instructions from the site http://www.mobileunlockguide.com/samsung-u900-soul using this you can unlock your phone from Network lock easily.
sahana, November 2013
