If you receive an email which says "Hello, you won a iPhone 4G from Facebook", stay away from it. It is a scam and will not get you anywhere close to that device. The big problem with this scam is that it uses a familiar look and feel and is really very enticing to click on.
However, clicking on it will ensure that you are scammed. Malwarebytes blocks the website on my PC, so you should ensure to use a similar security software for your own PC. If you don’t have any, take a look at some of the Free Antivirus available or visit our Online Security section to learn how to protect your PC.