A free iPhone4 scam is quickly spreading across Facebook targeting members of the social network by asking them to fill out an online survey with the reward of the in much demand apple phone.

Please beware, this scam installs an app on your profile and will spread a virus through your list of friends.  Facebook Login has seen these types of scam crop up too often with the likes of free iPads as well as recent links to webcams of Justin Bieber.

The message will read " Just testing Facebook for iPhone out :P Received my free iPhone today, so happy lol.. If anyone else wants one go here:"