User Guide

You can also turn o cellular data to prevent any cellular data usage.
Turn o Cellular Data: In Settings, choose General > Network, then tap the Cellular
Data switch to turn it o.
Set iPhone to add the correct prex when dialing from another country: In Settings,
tap Phone, then turn International Assist on. This lets you make calls to your home
country using the numbers in your contacts and favorites, without having to add a
prex or your country code. International Assist works for U.S. telephone numbers only.
When you make a call using International Assist, “International Assist” appears on the
iPhone screen, alternating with the “calling …” message, until your call is connected.
Note: International Assist may not be available in all areas.
Set the carrier to use: In Settings, tap Carrier, then select the carrier you prefer. This
option is available only when you’re traveling outside your carrier’s network. You can
make calls only on carriers that have roaming agreements with your iPhone service
provider. For more information, see “Carrier” on page 196.
Get voicemail when visual voicemail isn’t available: Dial your own number (on
a CDMA model, dial your number followed by #), or touch and hold “1” on the
numeric keypad.
You can use Airplane Mode to turn o cellular services and then turn Wi-Fi on to get
access to the Internet, while preventing voice roaming charges.
Use airplane mode to turn o cellular services: In Settings, tap Airplane Mode to turn
it on, then tap Wi-Fi and turn Wi-Fi on. See “Airplane Mode” on page 193.
Incoming phone calls are sent to voicemail. To make and receive calls again and get
your voicemail messages, turn airplane mode o.
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Chapter 5 Phone