Your phone allows you to access the Internet using a Wi-Fi connection, or using a 2G/3G mobile data connection. To access the Internet with your phone using a 2G/3G mobile data connection, you need a phone subscription that includes data transmission and settings to use a 2G/3G mobile data connection.
In most cases, settings for connecting to the Internet using a 2G/3G mobile data connection will be automatically downloaded to your phone the first time you turn on the phone with a SIM card inserted.
To access the Internet using a Wi-Fi connection you need to be in range of a Wi-Fi network, and granted access by the network administrator.
See Settings for calling, messaging and the Internet for more information on how to setup a 2G/3G mobile data connection or how to connect to a Wi-Fi network.