WhatsApp is always on and connected, how do I log off?

In short, you cannot disconnect or turn off WhatsApp at this time.The Nokia version of our application is designed to always be connected so that you receive your messages quickly, even when you are not actively using your phone. This is similar to how SMS works and allows WhatsApp messages to be delivered almost instantly.It is possible, however, to prevent WhatsApp from using your data network while you are roaming. Here's how.Since WhatsApp is always connected to the internet, if you are concerned about WhatsApp using up data in general, please read this article.Even though WhatsApp is always on, it should not adversely affect your phone's battery life. If you feel your battery life has been shortened, we have some tips on how to improve it.
Cheers,WhatsApp Support Team