my iPhone volume seems to increase and decrease by itself, why
Why does my iPhone 5s' volume increase and decrease by itself when connected via bluetooth to headphones, speakers, etc?
iPhone 5s, iOS 8.1.3
Do you have your Facebook app open when this is happening? Or any other app that gets live Notifications? If so, close them when listening to music. The Notifications being pushed to your device will lower the volume momentarily as they arrive.
Cheers,
GB