The Apple iPhone is a multimedia smartphone that is available on both Verizon Wireless and AT&T. In addition to supporting a 3G cellular Internet connection, the iPhone can also surf the Web using its built-in Wi-Fi chip. At times, you may notice that your iPhone's Wi-Fi's performance is sluggish or may not connect all together. Fortunately, there are a variety of simple techniques available that can be used to improve your iPhone's Wi-Fi connection.
Position your iPhone closer to the location of your wireless router. At times devices, such as microwaves and radios, can interfere with your iPhone's Wi-Fi connection, resulting in a very slow data speeds or, in some cases, no connection at all.
Tap on the "Settings" icon on your iPhone's home screen. Tap on the "Airplane Mode" tab at the top of the screen to enable the feature. The aeroplane mode function disables all of the iPhone's wireless connections, including Wi-Fi, Bluetooth and cellular data. Toggling your iPhone's Airplane Mode feature "On" and "Off" can help your phone establish a stronger connection to a wireless signal.
Tap on the "Settings" tab on your iPhone's home screen to launch the phone's settings menu. Scroll down and select the "General" tab. Click on the "Reset" option at the bottom of the screen and select "Reset Network Settings". This will reset your iPhone's network settings to factory defaults. Return to the "Settings" menu and click on the "Wi-Fi" tab. Click on the name of the wireless network that you wish to connect to and put in a password, if necessary.