How iPhone Connects to the Internet

iPhone connects to the Internet using either a Wi-Fi network or a cellular data network. iPhone does the following, in order, until connected:

• Connects over the last Wi-Fi  network you used that’s available.

• If no previously used Wi-Fi networks are available, iPhone shows a list of Wi-Fi networks in range. Tap a network and, if necessary, enter the password to join. Networks that require a password show  next to them. You can prevent iPhone from automatically showing available networks. See Wi-Fi.

• If no Wi-Fi networks are available or you choose not to join any, iPhone connects to the Internet over a cellular data network.

If no Wi-Fi networks are available and a cellular data network isn’t available, iPhone cannot connect to the Internet.

NOTE: If you don’t have a 3G connection, you cannot use the Internet over a cellular data network when you’re on a call. You must have a Wi-Fi connection to use Internet applications while also talking on the phone.

Many Wi-Fi networks can be used free of charge including, in some regions, Wi-Fi hotspots provided by your iPhone carrier. Some Wi-Fi networks require a fee. To join a Wi-Fi network at a hotspot where charges apply, you can usually open Safari to see a webpage that allows you to sign up for service.