1. Swipe down from the top of the screen to reveal the Notifications menu.
   
2. Tap the Settings icon.
   
3. Scroll to, then tap Wi-Fi.
   
4. To enable or disable wi-fi, tap the Wi-Fi switch.
   Note: To optimize battery life, turn Wi-Fi off when not in use.
   
5. Tap the desired network.
   Note: Scroll to, then 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.
   
6. If connecting to a secure network, enter the password.
   Note: Secure networks will be displayed with a lock over the signal icon.
   
7. Tap Connect.
   Note: Data transmitted over a Wi-Fi network does not count toward your AT&T data plan, and will not be billed.
   
8. The Wi-Fi Connected icon will display in the notification bar when the device is connected to a Wi-Fi network.
   Note: When Wi-Fi is on, and you are in range of a saved Wi-Fi network or an AT&T Wi-Fi HotSpot location, the phone will connect automatically.