Now ,I mean nowadays everyone have whatsapp on their phone
If not then download from here
So all are trying to get whatsapp calling feature on their phone(yeah me too) so I saw many people are posting their numbers on internet(quite clearly facebook).
I just say them please stop posting and searching for call facility in whatsapp because once whatsapp servers set then they gonna ask for update your whatsapp and you will get calling feature
It may take couple of days or weeks or months but they are working on it and you will be informed by whatsapp
