Whatsapp message retrieval
I have a Samsung Galaxy S4. When connected to Wi-Fi, I have no problem receiving my whatsapp messages. But when I switch over to my mobile data, the messages does not come through unless I open up whatsapp and wait a couple of seconds. Only then does it come through. I've never had this problem before. I can't think that it can be a reception problem because then the messages would not come through at all, but it does come through, only when I open whatsapp. I think it must be some sort of data setting maybe or a push notification setting, but I don't know how to fix it or where to start looking to fix it. Can anyone help?