So I just got a new phone (Blu Studio 5.0 LTE) and I'm loving it. The only issue I've noticed is I can't play music through my car's stereo using an auxiliary cord. No matter what aux cord I use, it just doesn't want to play and outputs a sound as if it's only half-way plugged in (quiet buzzing). The phone shows that there is a headset plugged in (like my old phone did), but it doesn't seem to play. However, the strange thing is, headphones work perfectly fine. Does anyone know the issue and how I can troubleshoot it?
The aux cord I use works perfectly fine (and so is the stereo), so it's not that. I've confirmed this by using another device to play music.
The aux cord I use works perfectly fine (and so is the stereo), so it's not that. I've confirmed this by using another device to play music.

