I've been an iPhone 6 user for exactly two months now, but I've been using Spotify on my iPhone for about a month and a half. For the past day or two, Spotify has made my iPhone heat up really quickly, meaning that it causes the battery to brain really quickly too. It never used to do this until now. My phone doesn't heat up or drain really fast if I stop using it. One time it drained from 100% battery life to 80% battery life in about 10 minutes because of it.
Why is it doing this? Is there any way to reverse it so it stops heating up and draining my battery life?