1 Answer

To find wifi in your phone, go to general settings, there you will see a connectivity option. Set up your wifi there. 

To connect to wifi: 
1
Tap a network. If you have not yet used your iPhone's WiFi or if you're in a new WiFi area, the iPhone will show you a list of available networks. Tap the network that you want to connect to in order to connect. If there is a password required a little lock icon appears. Enter the password to connect to locked networks and continue to surf the web.

2
Monitor your signal. As you use your iPhone, especially if you're moving around, you should take a look at the signal strength of the connection. The strength is indicated by a small, black broadcast symbol that stacks arches, or rounded bars, on top of one another. The more bars there are the better the signal.

3
Make connecting to WiFi automatic or manual. The iPhone is equipped to automatically search for available networks and connect you to one. If you do not want the phone to search for networks, select the "WiFi" option on the phone's menu. Then select either the on or off option of the "Ask To Join Networks." Turning this option off requires that you find networks manually.

4
Forget a network. Once you connect to a WiFi network once the iPhone automatically remembers the network and connects you to it at a later opportunity. To forget a network so you don't get automatically connected choose the "WiFi" option on the menu. Then tap the right arrow button next to one of the networks that the iPhone already remembers. Then tap "Forget This Network" to erase the phone's memory of the network.

Read more: How to Use iPhone WiFi | eHow.com http://www.ehow.com/how_2157454_use-iphone-wifi.html#ixzz2Rw11JA17