From the Home screen, touch and hold the Recent Apps Key (in the Touch Keys bar) > Settings > Wi-Fi.
If the Wi-Fi switch is off (gray icon), tap it to turn on Wi-Fi (On turns blue), your phone scans for available Wi-Fi networks.
Tap a network, then tap Connect to connect to it.
If the network is open, you can connect to the network directly by tapping the network name.
If the network is secured, you’ll be prompted to enter a password (Ask your network administrator for details).
When you’re connected to a network, you can tap the network name in the Wi-Fi settings screen for details about the speed, security and related settings.