Have you recently ported?\nI was on FNB\/CellC and experienced this problem. I did a sim swap but the problem was still there. I then decided to port to Telkom but the problem is still the same.\n\nI do receive calls but only SOME people have this problem. And they're on a variety of networks so I'm guessing theres some problem with my SIM. \n\nNot sure what I'm missing here but will check the call forwarding settings.