You can Google how to do it for your phone. Here's the procedure for my phone:
To place a conference call on a Samsung Galaxy Z Flip 4, open the Phone app, dial the first number, and tap the "Add call" button once the call connects. Then, dial the second number and tap "Merge" to combine the calls. You can add more participants by repeating the "Add call" and "Merge" steps. To end the conference call or disconnect a participant, tap the down arrow next to the participant's call and then tap "Drop".
Here's a more detailed breakdown:
- Start the first call: Open the Phone app and dial the first number. You can also select a contact from your contacts list.
- Add the second call: Once the first call is connected, tap the "Add call" button (usually a plus sign).
- Dial the second number: Dial the second number or select a contact from your list.
- Merge the calls: After the second call connects, tap the "Merge" button to combine the calls.
- Add more participants (optional): To add more participants, repeat steps 2 and 4.
- End or drop calls: To end the entire conference call, tap the "End call" button. To drop a specific participant, tap the down arrow next to their call and then tap "Drop".