For my iphone 4 I need antivirus?

For my iphone 4 I need antivirus?

While the technically correct answer is yes, iPhones (and iPod touches and iPads, since they run the same operating system) can get viruses, the likelihood of that happening (at least right now) is extremely low. There have only been a few iPhone viruses created and most were created by security researchers and haven't been released on the Internet. So NO, you don't need antivirus apps or programs on your iPhone 4. The chances of you getting a virus are slim.
Hope this helps.

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No, you do not need antivirus on iphones, its one of the best things about it since all code is reviewed before it can get into the appstore. You don't have the virus issues that other phones have.