You can activate three way calling as follows:
1) Call the first person.
2) Touch “Add call” (this function may under menu according to the different phones), then you can choose the third person you want to call.
3) When you get through to the second or the third person (depending on how many calls you want to merge), you can touch “Merge calls” to make a conference call.
* Three way calling requires network/SIM card support, please contact your SIM
Operator to make sure you have the three way calling service.