Apple iPhone OS 3.1 - Manual (Page 51)

4 Repeat steps two and three to add up to five calls.
Drop one call Tap Conference and tap next to a call.
Then tap End Call.
Talk privately with a call Tap Conference, then tap Private next to a call.
Tap Merge Calls to resume the conference.
Add an incoming call Tap Hold Call + Answer, then tap Merge Calls.
If your service includes conference calling, iPhone always has a second line available in
addition to the conference call.
Emergency Calls
If iPhone is locked with a passcode, you may still be able to make an emergency call.
Make an emergency call when iPhone is locked: On the Enter Passcode screen, tap
Emergency Call, then dial the number using the keypad.
Important: Only emergency numbers valid in the region where you’re making the call
will work. In some countries, you can’t make emergency calls unless your SIM card is
installed and activated, and the SIM PIN has been correctly entered or turned off.
In the U.S., location information (if available) is provided to emergency service
providers when you dial 911.
Important: You should not rely on wireless devices for essential communications, such
as medical emergencies. Use of any cellular phone to call emergency services may not
work in all locations. Emergency numbers and services vary by region, and sometimes
an emergency call cannot be placed due to network availability or environmental
interference. Some cellular networks may not accept an emergency call from iPhone if
it doesn’t have a SIM, if you locked your SIM, or if you haven’t activated your iPhone.
Visual Voicemail
On iPhone, visual voicemail lets you see a list of your messages and choose which ones
to listen to or delete, without having to listen to instructions or prior messages.
Note: Visual voicemail may not be available in all regions, or may be an optional
service. Contact your carrier for more information. If visual voicemail isn’t available,
tap Voicemail and follow the voice prompts to retrieve your messages.
Number of missed calls and unheard
voicemail messages appears on the
Home screen Phone icon.
51 Chapter 3 Phone