Smartphones have become a critical component for many of the things we do in our lives. There are still plenty of bugs and weird little things that don't quite work right on our phones, but it's when they have to connect to other devices that many of the strangest behaviors start to crop up. For years, one particular issue has been plaguing users as they connect a phone to their car stereos, headphones, or other audio output devices. Moments after a connection is made, the phone will suddenly and unexpectedly begin playing music – and anecdotally, they're always quite loud. Google Play Music is often blamed for this behavior because it's the app most likely to respond, but there's now a toggle to prevent that from happening.