Ok, so then I'm on a call (especially speaker phone) I used to get a ring when another call came in. After updating I don't get that any more and I have missed a few important calls because of this.
Does anyone know how to still get the ring notification while on a call?
There is a setting for notification sounds when on call but mine seems to be on.
Yes. There is an option in notifications to "alert when on call" but you were talking about an alert for call waiting. That only comes through the phone call, whether on speaker or handset. It's not something you can customize on your phone like email, text and BBM alerts.