Complex sentence: It fixes an issue with the audio and haptic feedback on iPhone 7 & 7 Plus and an issue on iPhone 6S where the touch input was unresponsive as they were not serviced with genuine Apple parts.
Split into simpler sentences: It fixes an issue with the audio and haptic feedback on iPhone 7 & 7 Plus. It also fixes an issue on iPhone 6S where the touch input was unresponsive as they were not serviced with genuine Apple parts.