I am Nokia care software engineer .. I used whatsapp with this are the Nokia model
• x2-01 s40
•c3-00 s40
•C3-01 s40
•x3-02 s40
•n200 s40
•n300 s40
•n303 s40
•E75 s60
•N78 s60
•N79 s60
•5800 s60
•5233 s60
•c5-03 s60
...................N8....
.E7...........windows lumia 800/710



Now....... I am going to use whatsapp in my n900 and N9 lets try