Merge calls option shows a popup 'Conference call not allowed' While trying to make a conference call using the merge calls button, my Micromax A25 with Android2.3.6 shows a popup displaying 'Condference call not allowed'. Can you please tell me whether it is OS related or my operator related ? Or there is any settings that needs to be enabled for activating conference calling in my device?
It's operator-related. Although the phone can support conference calling, most consumer calling plans don't let you do that.