The Conference Calling feature allows a maximum of 3 parties and each call must be initiated by the call originator.
From a Home screen, tap Phone (located at the bottom). If unavailable, navigate: Apps > Phone.
From the Phone tab, enter a 10-digit number then tap Call. To call a contact: from the People tab, tap the contact then (if necessary) tap the appropriate number.
Once the call has connected, tap Menu (located in the lower right).
Tap Add call.
From the Phone tab, enter a 10-digit number then tap Call. To call a contact: from the People tab, tap the contact then (if necessary) tap the appropriate number.