Learn how to make conference calls on your iPhone 5s. With GSM, you can set up a conference call with up to five people (depending on your carrier).

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 i icon next to a person, then tap End.
• Talk privately with one person: Tap i icon, 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.