Recently my call waiting feature has stopped working. Try to turn on and Could not save all waiting setting message appears (Dismiss). I have tried all other options (*43#). I have tried my Virgin Sim in different phones and the call waiting does not work. I have tried other network sims (3)and a Virgin sim in my phone and the feature works so not a phone problem. Contact to Virgin and a new sim issued. Problem still occurs. I can only assume it is a network setting problem. Can anyone help!