Vromoth: I was joking a little bit, but afaik Wazapp was built on top of S40 code which does not support push. I don't know if there's any code from Android java code, but even if there is we would need to use Android push servers for it then. And if we would want to use Nokias push servers then tgalal would need to have his own push server for Wazapp which would cost money per month. I think it's not that easy.

Other than all that I believe that Push service is not very reliable on all mobile operators.