Caller ID: For FaceTime calls, your phone number is displayed even if caller ID is turned
off.
For CDMA accounts, contact your carrier for information about enabling and using these
features. See .
Ringtones and vibrations
iPhone comes with ringtones that sound for incoming calls, Clock alarms, and the Clock
timer. You can also purchase ringtones from songs in the iTunes Store. See
.
Set the default ringtone. Go to Settings > Sound > Ringtone.
Assign different ringtones for the special people in your life. Go to Contacts, choose a
contact, tap edit, then tap Ringtone.
Turn the ringer on or off. Flip the switch on the side of iPhone.
Important: Clock alarms still sound when the Ring/Silent switch is set to silent.
Turn vibrate on or off. Go to Settings > Sounds. See .
International calls
For information about making international calls from your home area (including rates and
other charges that may apply), contact your carrier.
When traveling abroad, you may be able to use iPhone to make calls, send and receive text
messages, get visual voicemail, and use apps that access the Internet, depending on
available networks.
Enable international roaming. To turn on Data Roaming and Voice Roaming (CDMA), go
to Settings > Cellular. Contact your carrier for information about availability and fees.
Important: Voice, text message, and data roaming charges may apply. To avoid charges
while roaming, turn off Data Roaming and Voice Roaming (CDMA).
You may be able to roam on GSM networks, if you have a CDMA account, and your iPhone
has a SIM card installed. While roaming on a GSM network, iPhone has access to GSM
network features. Charges may apply. Contact your carrier for more information.