What a conference call is and why you might use it
A conference call is a phone conversation between three or more people at the same time. On an iPhone, you can start one by calling the first person, then adding a second person while keeping the first person on the line. The call merges into one conversation where everyone can hear everyone else.
You might use this to talk with a doctor and a family member together, coordinate with multiple contractors about a repair, or include a friend in a conversation with customer service. The iPhone handles the technical part — you just need to know where to tap.
Key Takeaways
- Start a conference call by calling one person, then tapping "Add Call" to dial a second person while the first stays on hold.
- After the second person answers, tap "Merge Calls" to combine them into one conversation where all three can hear each other.
- You can add up to five people total on most iPhone plans, though some carriers limit this — check with your provider if you need more than three.
- Everyone on the call uses their regular phone minutes or plan allowance; there is no separate conference call service to pay for.
- If you accidentally disconnect someone, you cannot reconnect them — you have to call them back and add them again.
Step-by-step: adding a second person to an active call
Start by calling the first person. Once they answer and you are talking, look at the bottom of your screen. You will see a button labeled "Add Call" — it looks like a plus sign inside a circle. Tap it.
Your first caller will be put on hold (they will hear silence or hold music, depending on your carrier). The keypad appears so you can dial the second person's number. Type their number and tap the green call button. When they answer, you can talk to them privately for a moment if you need to.
Once you are ready to bring everyone together, tap the "Merge Calls" button. This combines both calls into one conversation. All three of you can now hear each other. The button location depends on your iOS version — on newer iPhones it appears near the top of the screen; on older ones it is near the bottom.
Adding more than two people
The process repeats the same way for a third, fourth, or fifth person. With the first two already merged, tap "Add Call" again. The merged call goes on hold while you dial the third person. When they answer, tap "Merge Calls" to add them to the conversation.
Most carriers allow up to five people on one iPhone conference call. However, some regional carriers or older plans cap it at three or four. If you try to add a sixth person and the call fails, your carrier has a limit. Contact them to confirm the maximum for your plan.
Each person you add uses their own phone minutes or plan allowance. There is no separate charge for the conference feature itself — it is built into your phone service.
What happens if someone drops off or you need to remove them
If someone hangs up, they are straightforward gone from the call. The remaining people stay connected. You cannot put them back on the same call — you would have to call them again and add them using the same steps.
If you need to remove one person while keeping the others on the line, tap the "i" information button next to their name (on newer iOS versions) or look for a small "x" or remove option. Not all iOS versions show this clearly, so if you cannot find it, the safest option is to end the entire call and start over with the people you want to keep.
Troubleshooting: why the merge button might not appear
If you tap "Add Call" but the "Merge Calls" button does not appear after the second person answers, the most common reason is that your carrier does not support conference calling on your plan. This is rare on modern plans, but some older or prepaid plans exclude it.
Another reason is that the second person's phone is not actually connected yet — they may still be ringing. Wait for them to say hello before looking for the merge button. If the button still does not appear after they have answered, try ending the call and restarting, or contact your carrier to confirm your plan includes conference calling.
If you are using Wi-Fi calling and the second person is also on Wi-Fi calling, some carriers have reported occasional delays in the merge button appearing. Waiting a few seconds usually fixes this.
Conference calls on speakerphone or through headphones
You can run a conference call on speakerphone by tapping the "Speaker" button at the bottom of the screen before or after you merge the calls. This is useful if you want your hands free or if you are in a room with other people who need to hear the conversation.
If you have wired headphones or AirPods connected, the call will route through them automatically. You can switch between speakerphone, headphones, and the phone's earpiece by tapping "Speaker" or the audio output button (usually near the top of the screen).
When conference calling does not work the way you expect
If you call someone and they do not answer, tapping "Add Call" will not help — you need an active conversation with the first person before you can add anyone else. If the first person declines your call or hangs up before you add the second person, you have to start over.
Some business phone systems and Google Voice numbers do not work well with iPhone conference calls. If you are trying to add a business line or a number that routes through a computer system, the merge may fail silently or the call quality may drop. In those cases, using a dedicated conference calling service (like Zoom, Google Meet, or your company's phone system) is more reliable.
Frequently Asked Questions
Can I conference call someone on a different carrier?
Yes. The carrier does not matter — as long as both people have working phone numbers and your plan supports conference calling, you can merge them. Your carrier handles the connection, not theirs.
What if I am calling internationally?
You can add an international call to a conference call the same way, but international calls use minutes from your plan and may have additional charges depending on your carrier and plan. Check your international calling rates before merging an overseas call into a conference.
Does the other person know they are on a conference call?
Yes, once you merge the calls, they will hear the third person's voice and know they are no longer in a private conversation with you. Some people find this surprising if you did not warn them first, so it is polite to mention it before you add someone.
Can I record a conference call on my iPhone?
You can use the Voice Memos app to record audio from your iPhone's speaker, but you must tell everyone on the call that you are recording — this is required by law in many states. Some states require only one person to know (you), while others require everyone to consent. Check your state's recording laws before recording any call.
What if I accidentally tap "End Call" instead of "Merge Calls"?
If you tap "End Call" while adding a second person, you will disconnect the first caller. The second person will still be on the line with you. You would have to call the first person back and start the process over.