Thanks for being with Samsung and sharing your concern. We would like to inform you that you can do conference call by clicking on Add call option once you are on call. In case, there is any issue, contact your network provider once. Be sure to hit ♡ when you find an answer that works for you. For Further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
