HI whether you want to openline your iphone 4 from network lock ...Then have a look at sites like Theunlockspot.com
<click here for link> here they are rendering remote unlocking service to unlock all model iphone from network lock ..You first verify that whether they are rendering service for your country and network provider .If yes then pay for it and unlock your iphone4.
-- edited by haseenaa on Dec 03 2013, 06:55 PM