Conference call is talking to many people on one phone or smartphone at the same time.
Or telephone conference is three people talking simultaneously on the same call, using two different lines. this system is used more by companies to hold meetings at a distance or for people even k are far away.
To make a Conference Call or Combined Call, you will have to do the following:
Access the call keypad, enter the phone number you want or select a contact already saved press the green button to call wait for the person to answer the call.
Then, to add one more call to this call, just select the + add call symbol.
The keyboard will appear again, then you type the second phone number or select the contact already saved press the green button to call.
It is important to remember that at this moment the first call is on hold on mute.