ZenUI Dialer & Contacts allows user to make conference calls with the Merge call feature.
To make a conference call:
Call a contact.
Tap to pause the call, then tap to call another contact.
After the second contact successfully connected to the call, tap to merge the calls.
If you want to add more contacts to the conference call, repeat steps 2 and 3.
If you want to remove a contact from the conference call, tap Manage conference call then tap . To disconnect a contact, tap .
Notes:
This service is provided by your mobile service provider. Please check with your provider whether the service is activated if you are unable to make a conference call.
The maximum number of contacts in a conference call is 5 when using 2G/3G standards. VoLTE standard may cater more contacts in a conference call.