A flaw demonstrated in a YouTube video (seen below) demonstrates a difficult-to-access but reproducible bug in iOS 5.0.1 that can allow unauthorized users to bypass a lock screen on GSM-based iPhones and access recent contacts, make calls or even use FaceTime, iPhoneIslam reports. The hack revolves around trying to return a missed call while the sim card is taken out and re-inserted repeatedly (or in an area with no network coverage).
