Music apps, YouTube, Siri etc are working as expected when setting the phone up so that audio is only coming out of one ear plug (e.g. left channel) by putting the slide all the way to "L" and enabling "Mono Audio" in order to have the right and left channel together. However, FaceTime and Skype do not respect my settings and revert to stereo while in a call. I assume this is a system issue. Is there a way to fix this? Thank you very much in advance. Edit: Settings changed in system settings "Accessibility". iOS 8.1.2. Standard Apple ear plugs.