Wi‑Fi is a term used for certain types of Wireless Local Area Networks (WLAN). Wi‑Fi communication requires access to a wireless Access Point (AP).
Turn Wi-Fi On or Off
Turning Wi-Fi on makes your device able to discover and connect to compatible in-range wireless APs.
1.From a Home screen, tap 
Apps > 
Settings.
2.Tap Wi-Fi, and then tap On/Off to turn Wi-Fi on or off.
Wi-Fi Status Indicators
Status bar icons show your current Wi-Fi connection status:
•When Wi-Fi is connected, active, and communicating with a wireless Access Point (AP), 
Wi-Fi active is displayed in the Status bar.
•If a Wi-Fi access point is available, but your
device is not connected to it, 
Wi-Fi available is displayed. It may also be displayed if there is a communication issue with the target wireless Access Point.
