I have a Samsung Note 5 and my issue is that I listen to a white noise app to fall asleep. When I set my phone to Do Not Disturb it mutes the app every time someone contacts me for the duration of the ringing. To hear noise from the app and then have it constantly going on and off wakes me up. Is there anyway to fix this issue? I just switched over from an iPhone 6 and this wasn't a problem with them. It's the only thing I've liked the iPhone over the android for. The Do Not Disturb never affected white noise apps or alarms. Thank you for any help.