This post will show you how to force exit or close WhatsApp application running on Nokia 5800 XpressMusic. WhatsApp is a great mobile messaging application that runs on iPhones, Androids, Blackberry and Nokia. For those who does not have a data plan, running WhatsApp can be very expensive. It is also drains battery pretty fast while the application is running in the background. WhatsApp cannot be turn off. The "Exit" button in WhatsApp does not turn the application completely off. It will seems like it is turn off but it is still running in the background. WhatsApp will always maintain connection (by force!) by going through your available 3G, EDGE amd WIFi connection presets to connect without notification. This is how i force exit or close WhatsApp from running (even background process) on my Nokia 5800 XpressMusic.