One should not be too optimistic in this case, as it is a proven scam. This is a known scam, and the trick has been used my many scammers to filter out Facebook user’s personal information.
For the same, these scammers email the quasi-personal letter from Mark Zuckerberg, containing somewhat legit, singling you out as a randomly selected winner of a one-time only promotional event sponsored by Facebook and Apple. One would feel something is fishy at this stage only, as Zuckerberg would not have enough time to mail a few winners that they have won an iPad or an iPhone. Why would he shoot out cheap promotional mails to Facebook users.
However, the user has already won a free iPhone or iPad, but the catch is that for the same, why would Zuckerberg want a user’s e-mail address, phone number, and other account information to confirm. Add to it, the scammer does not make use of Facebook to acquire that information, but a random promotional company.
There is more for the Facebook users to know. Once a user clicks on the link to claim their prize, the redirected website explains that the user is a potential winner, despite the fact that the e-mail claimed that they are already winners of iPads and iPhones. To win, from now on, the potential winner has to answer a simple question.
If one has reached this stage, there is an important point to note, which is placed at the bottom of the screen and is in really small print. The smaller it is, the bigger information it is carrying. It says, that by participating users are authorizing a small charge to be added to your phone bill on a weekly basis. 
So, the things seem to be clearing off the air. This scam is designed to get commissioned sales for scammers for everyone they trick into signing up for this small charge. This was noted, as according to security expert Graham Cluley. It was noted that for the techies, it is easy to understand which mail is a scam, and which isn’t. But for an average Facebook user, it is not the same case. Many users are being duped by a number of such mails.
However, for the users, it should still hit some logic for such a mail. Why would Apple team up with Facebook to give away, as a promotion, a device that is one of the best-selling consumer electronics products in history? They would never, and if they ever do it, the world would know it on the whole, not just a user or too, that too privately via an email. Again, the redirection of the page is not to a Facebook page, but to a random promotional website.
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