What merging calls means and why you'd do it
Merging calls means connecting two separate phone conversations into one call where all three people (you plus the two callers) can hear and speak to each other at the same time. On iPhone, this is called a conference call, and it happens through your phone's built-in calling feature — no app needed.
You might merge calls when a friend needs to talk to someone you're already speaking with, when you're coordinating plans with multiple people, or when you need to loop a third person into a work conversation. The person you add doesn't have to be expecting it — you can pull them in mid-call.
This feature works on any iPhone model with iOS 10 or later, and it works whether you're on Wi-Fi calling, cellular, or both. Your carrier doesn't charge extra for conference calls, though your regular call minutes count toward your plan if you have limits.
Key Takeaways
- To merge calls, you put your first caller on hold, dial or call the second person, then tap "Merge Calls" when they answer.
- You can merge up to five calls at once on most iPhones, creating a conference call where everyone hears everyone else.
- If you accidentally tap the wrong button, you can separate the calls again by tapping "Private" next to a caller's name.
- The person you're adding doesn't need to know in advance — you can add them to an ongoing conversation without asking first.
The exact steps to merge two calls
Start with one person already on the phone. While you're talking to them, tap the "Add Call" button — it looks like a plus sign in a circle and sits at the bottom of your screen next to the keypad icon. This puts your current caller on hold automatically.
Now dial the second person's number or tap a contact to call them. Wait for them to answer. Once they pick up, you'll see a button that says "Merge Calls" at the bottom of the screen. Tap it. Both callers will now be on the same call and can hear each other.
If you want to add a third, fourth, or fifth person, repeat the same process: tap "Add Call," dial the next person, wait for them to answer, then tap "Merge Calls" again. Each time you merge, everyone on the call hears the new person join.
What the buttons actually do during a merged call
Once calls are merged, the screen changes. You'll see a list of everyone on the call with their names or numbers. Next to each person's name is a button labeled "Private" — tapping this separates that one person back into a private call with just you, while the others stay merged together.
You also see an "End Call" button at the bottom. Tapping this ends the entire conference call for everyone. If you want to hang up on just one person while keeping the others on the line, tap "Private" next to their name first to separate them, then tap "End Call" on that private line.
The "Keypad" button lets you enter numbers or symbols during the call — useful if you need to punch in a code or navigate an automated system while other people are listening.
How to add someone who's already calling you
If someone calls you while you're already on a call, your iPhone shows a notification at the top of the screen with their name and two buttons: "Decline" and "Accept." Tap "Accept" to add them to the call. Your first caller goes on hold, and once the new person answers, you can tap "Merge Calls" just like before.
This works the same way whether the incoming call is from someone you know or an unknown number. The only difference is that you see their phone number instead of a name if they're not in your contacts.
Separating calls if you need a private conversation
During a merged call, tap "Private" next to the person's name you want to talk to alone. That person stays on the line with you, but everyone else is put on hold. You can then have a private conversation with just that one person.
To go back to the full merged call, tap "Merge Calls" again. This reconnects everyone who was on hold. You can switch between private conversations and the full group call as many times as you need during a single call.
Why a merge might not work
If you don't see the "Merge Calls" button after someone answers, it usually means your carrier doesn't support conference calling on that line. This is rare on modern plans, but some older or prepaid plans don't include it. Call your carrier to check if conference calling is turned on for your account.
You also won't see the button if you're on a call with someone over Wi-Fi and trying to add someone on cellular, or vice versa — though this limitation is disappearing as carriers update their systems. If this happens, you can end the Wi-Fi call and start over on cellular, or ask the person you're calling to switch to Wi-Fi if they're able.
If the second person's phone goes to voicemail before they answer, the merge button won't appear. You have to wait for a live person to pick up.
What happens to the people on the call
Everyone on a merged call hears everyone else — there's no way to have a side conversation that the others can't hear once the call is merged. If you need privacy, use the "Private" button to separate out one person at a time.
The people you've added to the call can see that it's a conference call on their end, and they can see how many people are on the line. They can't add their own people to the call — only the person who started the conference can do that.
Frequently Asked Questions
Can I merge calls on FaceTime or other apps?
No. Merging calls only works with the Phone app's regular voice calling feature. FaceTime has its own group calling feature, but you set it up differently — you start a FaceTime call with one person, then tap "Add Person" to bring others in. Other apps like WhatsApp or Zoom have their own conference features that work separately from iPhone's phone system.
What if I accidentally tap Merge Calls and don't want to?
Tap "Private" next to one of the caller's names to separate them back out. You'll then have two separate calls again — one person on hold and one in a private conversation with you. You can keep them separate or merge them again later.
Can the people I'm calling see my phone number?
Yes, they see your number or your contact name depending on whether you're in their phone. If you have caller ID blocking turned on through your carrier, they'll see "Unknown" or "Blocked" instead. Caller ID settings are controlled through your carrier, not through iPhone itself.
How many people can be on a merged call at once?
Most carriers allow up to five people total on a conference call, including you. Some carriers support more, but five is the standard. If you try to add a sixth person, the merge button won't appear and you'll get a message that the limit has been reached.
Do I need a special plan to merge calls?
No. Conference calling is included in nearly all modern phone plans at no extra cost. If you have an older prepaid plan or a very basic plan, check with your carrier to confirm it's turned on, but you won't pay extra to use it.