Apple's iPhone is a Wi-Fi-enabled device, meaning you can use your own Wi-Fi connection when it's available. Not only is a Wi-Fi connection faster, but time spent on the Internet over Wi-Fi wont count toward your data plan. You'll know you're on Wi-Fi if you see three bars in the top-left corner of your iPhone's screen. If you have a strong connection, all three bars will be blue. If one or more of the bars are grey, your connection is not as strong as it could be. If you are not on Wi-Fi, the three bars will be replaced with a "3G" symbol. Another way to check whether or not you're on Wi-Fi is through your "Settings" menu.
Tap the "Settings" application on your iPhone's main screen.
Look under "Choose a Network." If your iPhone is using your Wi-Fi connection, you will see a check mark beside the network it is accessing.
Press the round "Home" button to exit the "Settings" menu.
Tips & Warnings
- If you're in range of your Wi-Fi signal but your iPhone is not accessing it, make sure your iPhone's Wi-Fi is not turned off. You can do this by tapping "Settings," tapping "Wi-Fi," and then moving the slider beside "Wi-Fi" from "Off" to "On." Even if your Wi-Fi is turned on, try turning it off and then back on again to reset the connection.