I have recently purchased a new Apple iPhone 4 mobile phone. And yesterday i have also bought a new TATA DOCOMO sim card, but from yesterday I am looking to activate the 3G service in my Apple iPhone 4 and I cannot able to activate it. I want to know how can I activate 3g setting service in my mobile phone. Someone has already started using TATA DOCOMO 3G service then please help me to configure my mobile phone.
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