Conference calling/ merging calls

Hello J27pRK27P6,

Thank you for using Apple Support Communities.

I understand that you want to make a conference call and merge calls. Take a look at this selection from the iPhone User Guide:

"Start a conference call

With GSM, you can set up a conference call with up to five people (depending on your carrier).

Note: Conference calls may not be available if your call is using VoLTE (Voice over LTE) or Wi-Fi Calling.

1. While on a call, tap Add Call, make another call, then Tap Merge Calls.
2. Repeat to add more people to the conference.
3. During the conference call, do any of the following:

• • Talk privately with one person: Tap , then tap Private next to the person. Tap Merge Calls to resume the conference.
  • Add an incoming caller on the same line: Tap Hold Call + Answer, then tap Merge Calls.
  • Drop one person: Tap  next to a person, then tap End."

While on a call on iPhone - Apple Support

Best regards.

I also cannot Merge calls. It only happens to me when I'm in Europe. When I am in the U.S. I can merge calls.

I've turned off VoLTE and also Wifi. I've even tried resetting my phone. I can add 2 numbers, and the merge call button is available, but when I push it, nothing happens.

Help pleaseeee!!!

Useful reply. I have turned off WiFi calling and VoLTE but once I have added two calls I then press the merge call button but nothing happens.

I have checked with Vodafone and they have confirmed I have the ability to arrange conference calls.

Any ideas?