Wi-Fi short for wireless fidelity refers to a set of wireless networking technologies and more specifically referred to as any type of 802.11 network. Wi-Fi is the wireless technology to handle the networking/communication. Wi-Fi allocates internet connection and to be transmitted by the radio waves. Radio waves are transmitted from antenna and Wi-Fi receivers pick them up. When a user receives the Wi-Fi signals, a wireless internet connection is produced and a user is prompted to provide the user name and password if required to establish a wireless connection.
Today the gap between a cell phone experience and Wi-Fi is huge. With a phone, it is usually safe to assume you have got a signal; with Wi-Fi it's almost always safe to assume you don't. Even in the presence of a hot spot (and there are few good ways to know you are, short of opening your laptop and "sniffing" for it), odds are you won't be able to log on, because it's either a private network or a commercial one that requires a subscription. Even places that advertise access, such as hotels and airports, often have it just in the lobby or at certain gates.
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