Just like the title says.. I own a Samsung Galaxy S4. As soon as I listen to a Spotify song (even offline available ones) and I send a whatsapp message my Spotify stops for a second or two playing.. What could this mean? Is my Spotify or my whatsapp draining so much of my RAM or storage that it slows down to a point it isn't possible to play anymore? What can I do? Thanks a lot, Koen.