Call forwarding, call waiting, and other call features on iPhone

iPhone supports many features, including call waiting, call forwarding, and conference calls, but certain features on iPhone behave differently on GSM and CDMA networks.

You can use different methods to turn on these features, depending on your wireless carrier's network technology (GSM or CDMA):

Feature iPhone (GSM networks) iPhone (CDMA networks) Notes
Call forwarding Turn on or off in
Settings > Phone.
Contact your carrier for information on using Call Forwarding. To see if call forwarding is turned on, look for this icon   in the status bar.
Call waiting Turn on or off in
Settings > Phone.
Contact your carrier for information on using Call Waiting.  
Caller ID Turn on or off in
Settings > Phone.
Contact your carrier for information on using Caller ID.  
Conference calls Supports up to five calls simultaneously Supports up to two calls simultaneously. CDMA networks may not be able to add, swap, or merge calls in certain situations. See the iPhone user guide for more details.
Dial a soft pause Tap and hold * when you dial. When you edit a contact number, tap +*#, then tap "pause." Inserts "," into a phone number and waits a few seconds before dialing the additional digits.
Dial a hard pause Tap and hold # when dialing. When editing a contact number, tap +*#, then tap "wait." Inserts ";" into a phone number and waits for the user to tap Dial before dialing the additional digits.
Place a call on hold Tap and hold Mute. N/A You can't place a call on hold on CDMA networks.

Learn more about differences using cellular data networks, including LTE.

 

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