1. To turn on Wi-Fi and connect to a Wi-Fi network, from the home screen, select Settings.
   
2. Select Wi-Fi.
   
3. Select the Wi-Fi toggle to turn on or off.
   Note: To optimize battery life, turn Wi-Fi off when not in use.
   
4. With Wi-Fi turned on, select the desired Wi-Fi network.
   Note: To connect to a hidden or unbroadcasted Wi-Fi network select Other. You will need to enter the Network Name (SSID), Security, and Password (if necessary) to continue.
   
5. If required, enter the Wi-Fi network password, then select Join.
   Note: Secure networks will display with a Lock icon.
   
6. When iPhone is connected to a Wi-Fi network, the Wi-Fi 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.
   
7. To remove a saved Wi-Fi network, select the Information icon 'i'.
   
8. Then select Forget This Network.
   
9. Select Forget.
   Note: Learn more from Apple support article: Connect to Wi-Fi on your iPhone. If you can't connect to a Wi-Fi network, get help.