Mobile Anti Spam Which Is The Best Application Of Anti-Virus And Anti-Spam And Anti Threats For Symbian OS Series 60 Version 3?

Which is the best application of Anti-Virus and Anti-Spam and Anti Threats for symbian OS series 60 version 3? - mobile anti spam

I have Nokia N73 Music Edition. I want this kind of application that is me from viruses and spam and other threats to ensure mobile phones. it is the best?
please tell me in detail. Ray thank you in advance.