Tap Settings > Wireless controls > Wi-Fi settings.
Available Wi-Fi networks are displayed under Wi-Fi networks. The available networks may be open or secured. This is indicated by or next to the Wi-Fi network name.
Tap a Wi-Fi network to connect to it. If you are trying to connect to a protected Wi-Fi network, you are asked to enter the security key for that Wi-Fi network before you can connect to it. is displayed in the status bar once you are connected.
The next time you connect to a Wi-Fi™ network the phone will remember the security key.