No WhatsApp notification on Xperia S after updating to JellyBean I have Xperia S running Android ICS, and the notifications of a new message of WhatsApp appeared in the top notification panel showing an icon of WhatsApp. I received an update to JellyBean and after that, I'm not seeing the notification icon when a new message is received.

If the volume is high, all I can hear is the new message tone, but there is absolutely no notification showing the new message received.

Does anyone know how to solve this problem?
From OP's self-comment,


  In Settings>Apps>Whatsapp. There is a check box right below the Icon which says "Show notifications" Check it and it is solved.