for the mobiles provided by the connection providers like vodafone, Tmobile and others you can access the gprs or 3G in the mobile fone only you cant able to access the connection using your pc or thru laptop, this is the same fault happen to one of my friend and we got flashed the mobile and updated with new version of the firmware and later it got connected , the main reason is the connection providers alter the firmware of the mobile for not to use the connection with their pc's or laptops