WiFi also spelled as Wifi and Wi-Fi is a popular wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections. The WiFi Alliance defines Wi-Fi as any “wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers’ (IEEE) 802.11 standards”. However, since most modern WLANs are based on these standards, the term “WiFi” is used in general English as a synonym for “WLAN”.
WiFi provides service in private homes, high street chains and independent businesses, as well as in public spaces at WiFi hotspots set up either free-of-charge or commercially. Organizations and businesses, such as airports, hotels, and restaurants, often provide free-use hotspots to attract customers. Enthusiasts or authorities who wish to provide services or even to promote business in selected areas sometimes provide free WiFi access.
Routers that incorporate a digital subscriber line modem or a cable modem and a WiFi access point, often set up in homes and other buildings, provide Internet access and internetworking to all devices connected to them, wirelessly or via cable.
WiFi works with no physical wired connection between sender and receiver by using radio waves technology, a frequency within the electromagnetic spectrum associated with radio wave propagation. When a radio frequency current is supplied to an antenna, an electromagnetic field is created that then is able to propagate through space. The cornerstone of any wireless network is an access point. The primary job of an access point is to broadcast a wireless signal that computers can detect and “tune” into. In order to connect to an access point and join a wireless network, computers and devices must be equipped with wireless network adapters.
The iPhone WiFi Transfer makes full use of WiFi network to share photos and videos between iOS devices and computers, such iPhone and iPad,iPad and iPod,iPod and iPhone, iPhone and PC,iPad and Mac, etc. There is no need of iTunes or any USB cables.