First, check your phone bill, and if you don't have one, charge it. If you do, call the operator and ask if the GPRS function (that is, the Internet function) has been activated. If not, if you need to access the Internet, let them help you to activate it (but it is recommended that if you need to activate it, it is best to subscribe to a monthly subscription, or else the phone bill will be a lot of money). If the original open, then look at the phone's network settings inside the settings, or in the network settings to restore her to the default settings to see.