Open the Phone app
Tap Keypad or Contacts and call the first person
Once the call connects, tap Add Call
Dial or select the second person
Tap Call
When the second call connects, tap Merge Calls
Repeat Add Call and Merge Calls to add more people
To remove a caller, tap the info button during the call and end that person’s call if available
To leave the conference, tap End Call
Make sure your carrier supports conference calling
Use FaceTime Audio or a conference app if your carrier does not support it