iPhone connects to the Internet whenever necessary, using a Wi-Fi connection (if available) or your carrier's cellular network. For information about connecting to a Wi-Fi network, see Connect to Wi-Fi, above.

When an app needs to use the Internet, iPhone does the following, in order:

• Connects over the most recently used available Wi-Fi network
• Shows a list of Wi-Fi networks in range, and connects using the one you choose
• Connects over the cellular data network, if available.