i have been facing same issues with my nokia 206. the software is uptodate. The problem started after the preinstalled whatsapp asked for updation. it needed some 700kb space more and there was none in the phone memory. I somehow managed to delete some files like photos etc and made the space. whatsapp has been updated but now everytime I open whatsapp it starts with some notification enabler download which it is unable to do i have no clue why. It starts with the download but suddenly says could not download. I think it might be some memory issue. Some people have suggested blue ftp but i have no clue whatsoever what that is and how to use it. I really dont want to play with the phone's software. I love this phone but this memory issue is simply irritating.
Last thing, this is the official nokia website, so do the nokia cutomer care ever reply on these discussion forums? How can i contcat customer support?