What is Wi-Fi?? WiFi stands for Wireless Fidelity and is the same thing as saying WLAN which stands for "Wireless Local Area Network." A facility allowing computers, smartphones, or other devices to connect to the Internet or communicate with one another wirelessly within a particular area. How Wi-Fi Works?? WiFi works off of the same principal as other wireless devices - it uses radio frequencies to send signals between devices. The radio frequencies are completely different say from walky talkies, car ra...