Hi I have an iPhone 4 ( iOS 5.0.1 ) , I downloaded whatsapp and it worked fine for a long time , it used to notify me about any new incoming message . Till a certain date where I was no more notified about any new message unless I open whatsapp to check . This started to happen since the iOS was 4 , even when I upgraded to iOS 5.0.1 its still persisting . I have tried un-installing whatsapp and then re-installing it , but nothing is changing ! Knowing that this thing doesnt happen when the iphone is on charge , where i can get push notifications about any new message even if whatsapp is running in the background ANY HELP ?!?!?!?!?