iPhone 6, 6 Plus, 5s users face issue with iOS 9.1 Touch ID; will iOS 9.2 ... International Business Times, India Edition A bug in iOS 9.1 seems to have caused the problem with the Touch ID sensor, as several users of Apple devices, especially iPhone 6, iPhone 6 Plus and iPhone 5s, have been facing issues in Touch ID fingerprint recognition and even complete failure to ...