Hi, i have an iPhone 6 (iOS 8.3) and i use it to stream Spotify to my car through bluetooth. When i bought the phone i noticed that if while listening to spotifly i received a whatsapp audio i could play that audio and the music will pause and the audio would be played through the IPHONE SPEAKER. I really liked this because it let me listen to the audio privately if i wanted to (just as when it's not paired to a bluetooth system). But I don't know why it just stopped doing that and now it plays everything through the car speakers... Any solutions? Thanks!