I am unable to use by wired c type earphone continuously while switching apps. It needs to be plugged out and plugged in each & every time for the audio to hear through the earphones, otherwise the audio will be through the speakers. This is the case for audio files in the device as well. Once you play an audio, pause and go out of the app, come back and play it again, it plays through the speakers. Only when you plug out and plug in again it will help to get back to the wired earphones.