Note: With CDMA, you can’t switch between calls if the second call was outgoing, but you
can merge the calls. You can’t merge calls if the second call was incoming. If you end the
second call or the merged call, both calls are terminated.
Conference calls
With GSM, you can set up a conference call with up to five people (depending on your
carrier).
Note: Conference calls may not be available if your call is using VoLTE (Voice over LTE).
Create a conference call. While on a call, tap Add Call, make another call, then tap Merge
Calls. Repeat to add more people to the conference.
Drop one person: Tap next to a person, then tap End.
Talk privately with one person: Tap , then tap Private next to the person. Tap Merge
Calls to resume the conference.
Add an incoming caller: Tap Hold Call + Answer, then tap Merge Calls.
Emergency calls
Make an emergency call when iPhone is locked. On the Enter Passcode screen, tap
Emergency Call (to dial 911 in the U.S., for example).
Important: You can use iPhone to make an emergency call in many locations, provided that
cellular service is available, but you should not rely on it for emergencies. Some cellular
networks may not accept an emergency call from iPhone if iPhone is not activated, if
iPhone is not compatible with or configured to operate on a particular cellular network, or
(when applicable) if iPhone does not have a SIM card or if the SIM card is PIN-locked.
In the U.S., location information (if available) is provided to emergency service providers
when you dial 911. Please review your carrier’s emergency calling information to understand
the limits of emergency calling over Wi-Fi.
With CDMA, when an emergency call ends, iPhone enters emergency call mode for a few
minutes to allow a call back from emergency services. During this time, data transmission
and text messages are blocked.
Exit emergency call mode (CDMA). Do one of the following:
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