In this tutorial, you will learn how to:
When connected to a Wi-Fi network, the
Wi-Fi connected icon will be displayed in the Notification bar.
Note: Data transmitted over a Wi-Fi network does not count toward your AT&T data plan and will not be billed. When using the AT&T network, data rates apply.
Swipe down from the Notification bar, then select and hold the
Wi-Fi icon. Alternatively, you can access Wi-Fi by selecting the
Settings icon > Network & internet > Wi-Fi switch.
If Wi-Fi is disabled, select the Wi-Fi switch to enable Wi-Fi services. When Wi-Fi is enabled, the device will automatically search for and display available Wi-Fi networks while refreshing the list. Select the desired Wi-Fi network to establish a connection.
Note: If connecting to a secure network, enter the Wi-Fi password then select Connect. Secure networks will display with a Lock icon.
Select the
Settings icon next to the desired network, then select Forget. 

TURN ON WI-FI AUTOMATICALLY: From the Wi-Fi screen, select Wi-Fi preferences then select the Turn on Wi-Fi automatically switch.
OPTIMIZE BATTERY LIFE: Turn Wi-Fi off when not in use. View Optimize Battery Life for more information.