I am from India in India apple 3G iphone cost is Rs 31,000 it's very high thats why i have told my uncle (My Uncle is living in London.) to send me an 3G iphone because in London cost of 3G iphone is $199(8GB) And $299 (16GB). But now i am having one question that how to unlock 3G iphone. I want to use my 3G iphone on Airtel and Idea network. Any one can help me ?