Any known virus or scam on iPhone and iPad?
I've recently had pop-up windows on my iPhone and iPad while using Facebook claiming I won a prize by something called http://mobile-rewards.mobi? It gives be only the option of clicking OK and simply freezes everything else on screen unless I do. Quitting Facebook and relaunching it still has the pop-up window. The first time it happened I carelessly clicked on it, and it disappeared but don't recall providing any other info. Have I infected my iPhone with some virus? Today it happened on my iPad, but this time I completely powered down and restarted the iPad and then launched Facebook and the pop-up was gone. Should I still be worried?
iOS 9.0.2