This happens to me all the time if I have the app open on my phone. Usually after I listened to it on headphones of any kind. This will occur when using both Bluetooth or hard jack connectors. If you disconnect either one, the music will stop and it remains paused for a random ammount of time, then start playing again later. I have not tried just starting the app without using it initially first. It is a really annoying bug that has been around ever since I started using Pandora on my phone. (I used it a lot on my PC before that, and I started using it on my smart phone multiple years ago) This also happens on my brothers Android phone which is of a completely different make and model. I'm really surprised the problem hasn't been tracked down yet. I've heard of people getting very frusterated with this to the point they uninstall Pandora eventually, you might want to track this problem down?
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