Today we are happy to announce the public beta release of WhatsApp Messenger for the Nokia S40 platform. You can download it by visiting
http://www.whatsapp.com/s40/ from your Nokia S40 phone (we are only supporting Nokia C3-00 and Nokia X2-01 phones at the moment, but we plan to add support for more S40 devices in the future)

As with any beta software, we need your help finding and reporting bugs – so please email s40-support at whatsapp dot com if you run into any problems with WhatsApp Messenger on your Nokia S40 phone. You can also contact us directly from the app via Options > About > Contact (that is preferred method when reporting bugs)
Please keep in mind that the product is still in beta and has limited functionality when it comes to multi-media or group chat. We plan to continue development efforts to further improve the application by fixing existing bugs and adding new features. Stay tuned…
Download on Mobile Browser http://www.whatsapp/s40/