From the home screen, drag down from the top of the screen with two fingers to reveal the Quick settings menu.
Tap the Settings icon.
Tap the Wi-Fi switch to toggle on/off.
Tap the desired wireless network. Note: Tap Add Wi-Fi network to connect to a hidden or unbroadcasted Wi-Fi network. You will need to enter the network SSID, security type, and a password (if necessary) to continue.
Tap the Password field, then enter the network password.
Tap CONNECT. Note: Data transmitted over a Wi-Fi network does not count toward your AT&T data plan, and will not be billed.
The Wi-Fi icon will display in the Notifications bar while Wi-Fi is connected.
To quickly toggle Wi-Fi on and off, drag down from the top of the screen with two fingers to reveal the Quick settings menu.