The HD Voice feature in Verizon 4G LTE coverage area allows up to 6 parties but each call must be initiated by call originator.
From a Home screen, tap the Phone icon (located at the bottom).
From the Dial tab, enter a 10-digit number then tap Phone icon (located in the lower-left).
To place a call from the Contacts list, tap the Contacts tab, then tap the appropriate number from the corresponding contact.
Tap Add call .
From the Dial tab, enter a 10-digit number then tap the Phone icon.