How Does smartphone WIFI Work

A Wifi Hot spot Works exactly like cell phones, or more like walky talkies. This is what happens.

First a computers wireless antenna sends a broken coded signal to the router
Next the router aqires this signal and codes it back to the internet

The same thing happens in reverse, from the other device at the same time.

The Wifi antennas are very close to walky talkies, meaning they send and receive information back and forth, in the form of radio waves. the main difference is that walky talkies have trouble communicating in tandem, whereas wifi networks send and receive information both ways simultaniously.

So this means that you have the luxury of having access to the internet whenever you are within range of a know or trusted network, or antenna.
As long as evey device has a wireless adapter, or antenna, and is within range of the router, it can connect to it and use it to access the internet. This also means that multiple devices, or computers can use the same connection at the same time.

Now Connect
After you activate your antenna, or wireless adapter, and you are in a public location where there is a wifi network in place, you can choose to log on to the network and use it to acces the web. Places like airports, and hotels have hot spots, as well as many other urban parks and areas.

Being Capable of plugging in to the Internet in public hotspots is highly convenient. Wireless home networks are convenient too. They allow for you to easily connect multiple devices and to move them from place to place without disconnecting and reconnecting cables. This works best for laptops and cell phones. PDA's and smartphones

This has increased and changed the way people work in todays information age, using things like instant stock updates, news and press articles, weather and shopping, as well as network productivity on wall street!

You need to install an adapter or antenna. Once you install it it should work automatically and on default settings, this includes security.
The name of the network, called its service set identifier The default setting is commonly the manufacturer's name.
Most routers use channel 6 by default. If you live in an apartment and you're neighbors are likewise using channel 6, you may experience interference. Switching to another channel should get rid of the problem.
Many routers use a standard, publically available sign-on, so it's a good thought to set you're own username and password.
Security is a pretty important park of wifi networking, and as long as a user is authorized to use a network, it can access anything on that network, within specified limits. And with or without passwords.

Its also important to consider security.

To keep you're network private, Try this:

MAC id address filters are  a little different from WEP or WPA. It does not ask for a password to allow users instead this teqnique  uses a computer's physical computer hardware as the id. Each computer bears its own unique MAC id address. MAC address filtering allows just machines with particular MAC addresses to access the network. Ones you Tell it to allow. You must specify which id addresses are admitted when you set up you're router. This technique is very secure, but if you buy a new computer or if visitors to you're home want to use you're network, you will need to add the new machines' MAC id addresses to the list of okayed id addresses. The system Is not foolproof. A clever hacker could fake a MAC id address -- that is, replicate a Okayed MAC address to fool the network to believe that the computer he or she's using has acces to the network.