Galaxy S Advanced Having problem in updating whatsapp ?

Hey guys,
I am using Samsung Galaxy S Advanced from nearly two months now and I had a wonderful experience with it.
But currently I am having a big issue with this phone because of which I am little disappointed with it. I am unable to update my whatsapp application. I tried a lot but could not any find any way of it.

Is there any one having the same issue or is using the same phone. please do tell me if there is any way out of this?

Check out your memory capacity first and after then if you device has enough memory to store then try to re-install it. There may be network problem also.