Apple today released a new support document, detailing the issue behind the recent problems some iOS 6 users have been experiencing with FaceTime. According to Apple, a bug resulting from an expired device certificate has rendered FaceTime unusable on older versions of iOS and the only solution to the problem is to update to the latest version of the operating system. Devices capable of running iOS 7 must be upgraded to iOS 7.0.4 or later, while devices unable to run iOS 7, such as the fourth-generation iPod touch and the iPhone 3GS, must upgrade to iOS 6.1.6.If you started to have issues making or receiving FaceTime calls after April 16, 2014, your device or your friend's device may have encoun
